My Earth Day contribution...
Apr. 22nd, 2006 12:07 pmMy husband actually told me to blog about this. I think he's tired of me "tsk tsking" on the back porch at our Church of the Right Angle Worship neighbors on a daily basis. Quick disclaimer for skimmers: I am a Master Gardener for the state of Texas, part of my function is to educate the public on responsible land stewardship. So... that was your clue to keep skimming. WAIT! It's IMPORTANT!
Currently my home state is in a drought, North and Central Texas in particular. Ranchers are reduced to slaughtering their animals because there is no water for them. (Seeing old timer farmers crying on the news because they're sick about having to kill their herds to spare the animal's suffering is enough to break your heart.) It's not been this bad since 1957 when Central and West Texas hit dust-bowl proportions. So I'm filled with GLEE when I see my neighbors running their sprinklers every single day. In the late afternoon. When it's windy. Because it is important to soak that concrete to help it grow and... that's not right. [/sarcasm] On average, 25% of the potable water in our country goes to LAWNS. Not our bodies, not our crops, our LAWNS. Much of that is lost to evaporation or run-off. The biggest waste of water is from applying too much too often. Excessive irrigation leaches the soil of nutrients, which then pollutes the ground water. And if there's excessive fertilizer on the lawn, that gets carried into the lakes and streams, and pollutes them, as well.
Have you ever seen a house with sickly, yellowing leaves on the shrubs? Or bright red leaves among the yellowing, sickly leaves? Number one indicator of over-watering. Which, by the way, is the number-one reason for plant death: over-watering.
Obviously I'm not going to be crazy and suggest that you don't have an emerald putting green at your home. That's crazy talk. Currently I live on a third of an acre with Bermuda grass. Last year I ran my sprinkler system four times. For the year. The whole year. In Texas. With triple digits in August. This year I've run my system once. My lawn is every bit as green as Right Angle's. How is that possible? Very easily. The key is to water long and deeply, and at the correct time of the day. And I have a xeriscape landscape. That usually conjures up images of gravel and yucca plants. Anyone that saw my gardening pictures the other day knows that isn't the case. Xeriscape means: good design based on your soil's condition, practical turf areas, appropriate plant selection - things that grow in your area, in other words, efficient irrigation, and use of mulches.
A xeriscape garden should decrease your maintenance by 50%.
The number one user of resources in a landscape is the lawn. You may not believe this, but grass needs more water than perennials, trees, shrubs, etc. How often do you mow? And now... how often do you deadhead your flowers? Having less lawn and more garden beds will decrease your need for maintenance, believe it or not. But not everyone wants gardens, so how do you know when to water? Should there be a schedule? The key is to LOOK at your lawn. Believe it or not, the grass will give clear indications that it needs to be watered. The blades will curl inwards, they'll begin to lose their luster, and when you walk on it, it may not spring back. THEN you need to apply one inch of water to the whole landscape.
So how do you do that? If you have a sprinkler system, it's very easy to determine how long your system needs to run to apply one inch. Use straight-sided cans (like cat food or tuna cans). Place them around the lawn and run your system. When the cans are 3/4 filled, mark the time your system ran, and there's your answer. However: if you have a sloped lawn, divide that time in half and run the system twice. You'll allow the water to be absorbed before it has a chance to run-off. This will also work with a manual sprinkler (the kind you played in as a kid).
So you've run your system (or drug the old back-and-forth sprinkler out), so when do you run it again? Every Saturday? Twice a week? It depends. Has your lawn began to show the signs of water need, as mentioned above? Or... have you stuck your finger in the ground to see if it's wet or dry? Easiest way to determine is to poke a finger in. If the top two knuckles on your pointer are moist when you've pulled it out, your lawn is fine.
The timing is important, as well. NEVER EVER RUN YOUR SPRINKLERS AT NIGHT. Not ever. NEVER. Wet plants + summer warmth = fungus among us. You've just created the best possible environment for all manners of baddies to thrive. NEVER EVER RUN YOUR SPRINKLERS DURING MID-DAY. OR IN THE WIND. OR WHEN IT IS RAINING. You laugh, but you know you've seen sprinklers running automatically during a rainstorm. Your sprinkler system should be on MANUAL. Here's an example:
My system (on manual) has nine stations. Based on my experiment with tuna cans, they all have a different time they run. It took me a day to set this up, but now I don't have to think about it. Nine systems, running on average 15 minutes a piece, and the whole system repeats once more. I have it set up to start at 4 am. It finishes around 7:30 am, just when the wind is starting to pick up - no sense in having the spray blown onto the sidewalk or street where it does my landscape no good. The absorption into the soil is almost complete by the time the sun really hits anything and causes evaporation, again, where it will do the landscape no good. The hotter it gets, I may set it to start at 3:30 am so it's finished before 7 am. The leaves will be dry throughout the day and not spend several hours in the cooler, damp conditions fungus and bugs prefer.
The idea in all of this is to get the water to move down through the soil to at least 6 inches. The problem with frequent and shallow watering is the roots grow horizontally, just under the surface, where they are more susceptible to drying out from hot winds, exposure from mowing too low, etc. The deeper the roots grow, the easier it is for your lawn to get its OWN water, thus reducing your need to apply water that you pay for. Bermuda, for example, will grow roots that are 18 inches long. One and a half feet. Incidentally, that's about how deep a TREE'S roots grow.
Here in Texas we have hard, clay soil that most people hate. The thing about clay is it holds water for a very long time. It's actually a benefit for us. Which is why I get away with not having to irrigate my gardens regularly. Those that have sandy, loose soil will obviously have to water more often. But as sandy soils tend to exist in areas of higher rain percentages... Not really - the need to add ADDITIONAL water isn't great. Again, stick your finger in. Top two knuckles dry? Time to water.
So here is my water waste rant. We are rapidly running out of potable drinking water in the world, and it's something so simple to fix, this one little aspect of our lives that uses a quarter of our entire supply of drinking water. I haven't even started on the fools that bag their clippings! Or excessive fertilizing! (Which causes excessive growth, which in turns forces you to mow more often, which makes more bags of clippings for our landfills, which...)
For the record, here's a list of common grasses in the US and their watering/ physical maintenance needs, one being the greatest need, ten being the least.
1. Tall fescue
2. bluegrass
3. ryegrass
4. centipede grass
5. seashore paspalum
6. St. Augustine
7. hybrid bermudagrass ("Tif" and "409" - used primarily on golf courses)
8. zoysiagrass
9. common bermuda
10. buffalo (requires NO additional irrigation - survives on rainfall only)
Last note: the more organic material you can incorporate into your landscape, the better water retention you'll gain. Applying a layer of compost to your landscape in the early spring when the lawn is beginning to green up, and again in fall when the lawn is beginning to decline and "sleep" for the winter is an excellent way to benefit your entire landscape. And LEAVE YOUR CLIPPINGS ON THE LAWN. Do not bag those clippings!!
*climbs off recycled material soap-box*
Thanks for listening, and the mojitos and nibblies are waiting everyone in the back yard.
*Statistics come from Texas A&M horticulture department, and the Texas Cooperative Extension, a division of TAMU.
Currently my home state is in a drought, North and Central Texas in particular. Ranchers are reduced to slaughtering their animals because there is no water for them. (Seeing old timer farmers crying on the news because they're sick about having to kill their herds to spare the animal's suffering is enough to break your heart.) It's not been this bad since 1957 when Central and West Texas hit dust-bowl proportions. So I'm filled with GLEE when I see my neighbors running their sprinklers every single day. In the late afternoon. When it's windy. Because it is important to soak that concrete to help it grow and... that's not right. [/sarcasm] On average, 25% of the potable water in our country goes to LAWNS. Not our bodies, not our crops, our LAWNS. Much of that is lost to evaporation or run-off. The biggest waste of water is from applying too much too often. Excessive irrigation leaches the soil of nutrients, which then pollutes the ground water. And if there's excessive fertilizer on the lawn, that gets carried into the lakes and streams, and pollutes them, as well.
Have you ever seen a house with sickly, yellowing leaves on the shrubs? Or bright red leaves among the yellowing, sickly leaves? Number one indicator of over-watering. Which, by the way, is the number-one reason for plant death: over-watering.
Obviously I'm not going to be crazy and suggest that you don't have an emerald putting green at your home. That's crazy talk. Currently I live on a third of an acre with Bermuda grass. Last year I ran my sprinkler system four times. For the year. The whole year. In Texas. With triple digits in August. This year I've run my system once. My lawn is every bit as green as Right Angle's. How is that possible? Very easily. The key is to water long and deeply, and at the correct time of the day. And I have a xeriscape landscape. That usually conjures up images of gravel and yucca plants. Anyone that saw my gardening pictures the other day knows that isn't the case. Xeriscape means: good design based on your soil's condition, practical turf areas, appropriate plant selection - things that grow in your area, in other words, efficient irrigation, and use of mulches.
A xeriscape garden should decrease your maintenance by 50%.
The number one user of resources in a landscape is the lawn. You may not believe this, but grass needs more water than perennials, trees, shrubs, etc. How often do you mow? And now... how often do you deadhead your flowers? Having less lawn and more garden beds will decrease your need for maintenance, believe it or not. But not everyone wants gardens, so how do you know when to water? Should there be a schedule? The key is to LOOK at your lawn. Believe it or not, the grass will give clear indications that it needs to be watered. The blades will curl inwards, they'll begin to lose their luster, and when you walk on it, it may not spring back. THEN you need to apply one inch of water to the whole landscape.
So how do you do that? If you have a sprinkler system, it's very easy to determine how long your system needs to run to apply one inch. Use straight-sided cans (like cat food or tuna cans). Place them around the lawn and run your system. When the cans are 3/4 filled, mark the time your system ran, and there's your answer. However: if you have a sloped lawn, divide that time in half and run the system twice. You'll allow the water to be absorbed before it has a chance to run-off. This will also work with a manual sprinkler (the kind you played in as a kid).
So you've run your system (or drug the old back-and-forth sprinkler out), so when do you run it again? Every Saturday? Twice a week? It depends. Has your lawn began to show the signs of water need, as mentioned above? Or... have you stuck your finger in the ground to see if it's wet or dry? Easiest way to determine is to poke a finger in. If the top two knuckles on your pointer are moist when you've pulled it out, your lawn is fine.
The timing is important, as well. NEVER EVER RUN YOUR SPRINKLERS AT NIGHT. Not ever. NEVER. Wet plants + summer warmth = fungus among us. You've just created the best possible environment for all manners of baddies to thrive. NEVER EVER RUN YOUR SPRINKLERS DURING MID-DAY. OR IN THE WIND. OR WHEN IT IS RAINING. You laugh, but you know you've seen sprinklers running automatically during a rainstorm. Your sprinkler system should be on MANUAL. Here's an example:
My system (on manual) has nine stations. Based on my experiment with tuna cans, they all have a different time they run. It took me a day to set this up, but now I don't have to think about it. Nine systems, running on average 15 minutes a piece, and the whole system repeats once more. I have it set up to start at 4 am. It finishes around 7:30 am, just when the wind is starting to pick up - no sense in having the spray blown onto the sidewalk or street where it does my landscape no good. The absorption into the soil is almost complete by the time the sun really hits anything and causes evaporation, again, where it will do the landscape no good. The hotter it gets, I may set it to start at 3:30 am so it's finished before 7 am. The leaves will be dry throughout the day and not spend several hours in the cooler, damp conditions fungus and bugs prefer.
The idea in all of this is to get the water to move down through the soil to at least 6 inches. The problem with frequent and shallow watering is the roots grow horizontally, just under the surface, where they are more susceptible to drying out from hot winds, exposure from mowing too low, etc. The deeper the roots grow, the easier it is for your lawn to get its OWN water, thus reducing your need to apply water that you pay for. Bermuda, for example, will grow roots that are 18 inches long. One and a half feet. Incidentally, that's about how deep a TREE'S roots grow.
Here in Texas we have hard, clay soil that most people hate. The thing about clay is it holds water for a very long time. It's actually a benefit for us. Which is why I get away with not having to irrigate my gardens regularly. Those that have sandy, loose soil will obviously have to water more often. But as sandy soils tend to exist in areas of higher rain percentages... Not really - the need to add ADDITIONAL water isn't great. Again, stick your finger in. Top two knuckles dry? Time to water.
So here is my water waste rant. We are rapidly running out of potable drinking water in the world, and it's something so simple to fix, this one little aspect of our lives that uses a quarter of our entire supply of drinking water. I haven't even started on the fools that bag their clippings! Or excessive fertilizing! (Which causes excessive growth, which in turns forces you to mow more often, which makes more bags of clippings for our landfills, which...)
For the record, here's a list of common grasses in the US and their watering/ physical maintenance needs, one being the greatest need, ten being the least.
1. Tall fescue
2. bluegrass
3. ryegrass
4. centipede grass
5. seashore paspalum
6. St. Augustine
7. hybrid bermudagrass ("Tif" and "409" - used primarily on golf courses)
8. zoysiagrass
9. common bermuda
10. buffalo (requires NO additional irrigation - survives on rainfall only)
Last note: the more organic material you can incorporate into your landscape, the better water retention you'll gain. Applying a layer of compost to your landscape in the early spring when the lawn is beginning to green up, and again in fall when the lawn is beginning to decline and "sleep" for the winter is an excellent way to benefit your entire landscape. And LEAVE YOUR CLIPPINGS ON THE LAWN. Do not bag those clippings!!
*climbs off recycled material soap-box*
Thanks for listening, and the mojitos and nibblies are waiting everyone in the back yard.
*Statistics come from Texas A&M horticulture department, and the Texas Cooperative Extension, a division of TAMU.
And here's mine.
Date: 2006-04-22 10:23 am (UTC)Also, the amount of land fill being consumed by plastic shopping bags is ridiculous, not to mention the amount of oil being used up by a petroleum based products like plastics. Go buy some sturdy canvas/paper bags, the supermarket probably has them. They are really handy in general and it will ease your liberal white guilt.
Thanks for the lawn clipping tip.
P.S. If you can afford the initial cost, get solar power for your home. At the very least, you'll heat all your water. At the most, you'll never pay a power bill again and you might produce enough electricity to actually pump power back into the grid. Big sky state, I'm talking to you.
Re: And here's mine.
Date: 2006-04-22 10:52 am (UTC)But this particular neighbor is just a crank. Well, he's about to be a crank with a violation fine to pay.
(And our energy company is 95% wind power - there's a small grassroots program building here to get more people to use that Big Sky. And that's why Kinky Friedman's getting my vote this coming state election. :D )
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Date: 2006-04-22 10:26 am (UTC)no subject
Date: 2006-04-22 10:52 am (UTC):D
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Date: 2006-04-22 10:33 am (UTC)no subject
Date: 2006-04-22 10:53 am (UTC)(no subject)
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Date: 2006-04-22 10:36 am (UTC)Here in London and the South East in April (yes spring - not much sun yet) we're already on hosepipe bans. Our waterboards bring in a blanket ban with I believe quite hefty fines if youre caught watering your grass/garden using hosepipes/sprinkler systems when there is a water shortage. We're still allowed to lug watering cans around *g*
Xeriscape gardening and water conservation have been a pretty hot topic amongst the gardening circles for a number of years now - and the major garden shows (Chelsea, Hampton Court etc) are all pusing water conservation measures and planting schemes.
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Date: 2006-04-22 10:55 am (UTC)Part of what I do for the MG association is garden shows, etc.,and giving lectures on land stewardship. It's a lot of fun, and I'm always amazed at how little people know - and how much they want to know.
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Date: 2006-04-22 02:54 pm (UTC)(no subject)
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Date: 2006-04-22 11:05 am (UTC)no subject
Date: 2006-04-22 11:32 am (UTC)My kids are so used to this rant of mine, that I overheard them telling our new Canadian neighbors (unaccustomed to the heat, and had no idea we were in a drought here) that they wouldn't play in their sprinklers to cool off because it would be "wasteful." :D
(Not that I'm some self-righteous fist-shaker, or anything. I firmly believe in catching more flies with honey than vinegar.)
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Date: 2006-04-22 11:16 am (UTC)I also get so annoyed seeing sprinklers watering concrete. When there was the big blackout in Ontario and the Eastern seaboard of the U.S., I thought it would be a wake-up call to people about the amount of energy they were wasting. But the next morning - when many areas were still without power and water - I walked to work through a ritzy shopping neighbourhood and they were washing down the sidewalks and roads!!
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Date: 2006-04-22 11:35 am (UTC)I will say that using fertilizer is fine, it's people who fertilize EVERY MONTH that kill me. And don't follow the instructions and put the wrong thing down, or way too much on their lawn. Here in North Texas, all we need (because of our soil type) is nitrogen. Which... is exactly what grass clipping consist of. :D
I do fertilize in the fall, to give the roots a full meal before it hunkers down for winter. But yes: a little planning goes a long way. (How cool that your mom did that!! Sounds like a fascinating experience.)
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Date: 2006-04-22 12:50 pm (UTC)Especially the not running sprinklers at night, which, in the north and on the west coast, especially, will also lower soil temps sufficiently to effect plant growth and, in food gardens, fruit development and ripening time.
I combine a manual irrigation system and managed solar intake to regulate my house temperature, too- cooling the house overnight and in the early morning, covering and closing windows and strategically running sprinklers to lower outside air temperatures. In my part of the country, restricting the use of electricity for AC saves more instream flow than restricting water use, especially where groundwater withdrawal is the primary source of potable water.
The deal is: everyone needs to find out more about where their water comes from, and where it goes post use. Around here, it's still a common misconception that the groundwater we drink falls as snow on the distant mountains, when, in fact, it's almost all from local rainfall.
Julia, on a day that the cities of Olympia, Lacey and Tumwater have announced their intention to purchase the water rights to the "It's the Water" artesian springs.
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Date: 2006-04-22 04:02 pm (UTC)I think people are more pissed that they can't take their toys out on the water right now, than realizing they're going to not be able to put in a pool this year. Or, you know... wash their car, runs their hoses in the day... :/
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Date: 2006-04-22 01:15 pm (UTC)I'm NOT a gardener, but Florida goes through it's drought periods, and Central FL is ALWAYS under water regulations. It bugs me, BUGS ME TO NO END to see irrigation systems on in the rain, at night, or, like you say, on windy days. Grrrr.
I'm so sticking this in my memories, because, hey! It's a smart effin post about an issue that still pisses me off with these doggone snobirds and their greener than Ireland lawns! Grrrraaarrrgg.
Thanks, stoney for the head up.
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Date: 2006-04-22 04:03 pm (UTC)I used to live in Southern Utah - home of the red rocks desert. And people would try so hard to have hostas and hydrangeas and ferns and would water twice a day EVERY DAY.
In the DESERT. ...why did you move here, exactly? It's mind boggling.
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Date: 2006-04-22 01:36 pm (UTC)/rant
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Date: 2006-04-22 04:04 pm (UTC)And my goal is to get rid of most of my lawn entirely. Little by little... When Mr. S is gone. Heh. he has this idea that we NEED it. I keep pointing out how exhausted he is after mowing it. :D
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Date: 2006-04-22 01:40 pm (UTC)no subject
Date: 2006-04-22 04:06 pm (UTC)Well, they've pretty much gotten the Live Version from me. Problem is, Right Angle Worshippers don't cotton to this young whippersnapper thinkin' she knows sumpthin about nothin', you see. I make a point of pulling a few of their weeds when I prune my wall garden that faces their house.
And saying it looks like a sign of over-watering. (which weeds typically are, for the record.) Some folks just don't believe young women, and that's all there is to it. :|
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Date: 2006-04-22 02:46 pm (UTC)no subject
Date: 2006-04-22 04:08 pm (UTC)I wonder if anyone made a spreadsheet showing the money they'd save by NOT SPENDING IT ON WATER would convince them.
...probably not. People worship the almighty Green Square.
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Date: 2006-04-22 05:09 pm (UTC)no subject
Date: 2006-04-23 07:00 am (UTC)Uh... if anyone can explain that philosophy to me, that'd be great.
All the daytime watering will do - as far as my understanding goes - is have a good percentage (at least 35%) carried off by wind, and another 35% minimum immediately evaporated into the atmosphere. And as it takes about 600 gallons of water for a 1,000 foot lawn to move through an inch... That's a lot of money down the tube, first and foremost. You've now got to run your sprinkler system more than three times longer to get proper irrigation!
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Date: 2006-04-22 07:09 pm (UTC)I think we all need some educating about using water sensibly; thank you for your words of wisdom.
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Date: 2006-04-23 07:01 am (UTC)Our old house didn't have any irrigation systems, so I relied on rainbarrels. We drilled a hole in the base, attached an on/off valve, and hooked up soaker hoses for the beds/lawn. It was great!
no subject
Date: 2006-04-23 01:37 am (UTC)no subject
Date: 2006-04-23 06:56 am (UTC)And no, you aren't a disappointment. More of a "shame," really.
:D Hey there! how are you?
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Date: 2006-04-23 05:37 am (UTC)::hoses the paths and driveway and footpaths and street and other street and freeway::
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Date: 2006-04-23 07:02 am (UTC)FREEWAY. *cackles*
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Date: 2006-04-23 10:59 am (UTC)Cactus ROCK. What up, B? You gonna be aroud later? I'm all listless and avoidy today for some reason....
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Date: 2006-04-23 12:56 pm (UTC)no subject
Date: 2006-04-23 08:20 pm (UTC)I don't need to buy birdseed as I have enough plants that have seed heads/berries to keep them fed in winter. And in the summer, well... I want them eating bad bugs. :D
It's amusing to me how much time people spend on their lawns where I am (Texas.) It's a natural grassland - leave it alone and it thrives. Why spend all that energy on something that doesn't need it? Whooops... got back on my soapbox, didn't I?
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Date: 2006-04-24 09:03 am (UTC)Our yard (it doesn't deserve the title of "lawn") has to fend for itself. I don't have any idea what kind of grass it has. Probably mostly crabgrass.
As you know, I killed some of my "garden" with overwatering and I'm making a concientious effort to do better. But my azalea bush that I bought last spring died over the winter, waaah! All brown and forlorn. My black thumb strikes again.
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Date: 2006-04-24 09:07 am (UTC)And... I thought azaleas went dormant in winter up north? I could be wrong. (THey're deciduous, right? They lose their leaves and bud up again in the spring? I'll check.) You could go out there to one of your azaleas, scratch at the bark about halfway down the plant with your nail, and see if there's green pulp. If so, it's fine. If it snaps like a dry twig, well...
:) *pets and soothes*
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Date: 2006-04-24 03:43 pm (UTC)