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Author Topic: Dusk dawn question  (Read 665 times)

runner49

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Dusk dawn question
« on: January 24, 2018, 04:54:51 PM »

I see that timer programming includes dusk/dawn settings. Does this also allow for offsets to the dusk/dawn times? Thanks.
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Tuicemen

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Re: Dusk dawn question
« Reply #1 on: January 24, 2018, 05:14:04 PM »

Yes before or after by up to 30 mins
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Tuicemen

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Re: Dusk dawn question
« Reply #2 on: February 01, 2018, 05:43:29 AM »

Since this ended up becoming a bug thread I split the thread and moved it to the Bug section
http://forums.x10.com/index.php?topic=30130.0
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arizona480

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Re: Dusk dawn question
« Reply #3 on: August 11, 2018, 11:29:34 PM »

Yes before or after by up to 30 mins

Dusk:  Does -30 mean if the sun sets at 6:00 pm the devices are turned on/off at 5:30 pm?  (+30 6:30 pm)?
Dawn: Does -30 mean if the sun rises at 6:00 am the devices are turned on/off at 5:30 am? (+30 6:30 am) ?


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dave w

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Re: Dusk dawn question
« Reply #4 on: August 12, 2018, 04:50:17 PM »

Yes before or after by up to 30 mins

Dusk:  Does -30 mean if the sun sets at 6:00 pm the devices are turned on/off at 5:30 pm?  (+30 6:30 pm)?
Dawn: Does -30 mean if the sun rises at 6:00 am the devices are turned on/off at 5:30 am? (+30 6:30 am) ?
It is randomized with the randomizing window; plus or minus, UP TO thirty minutes from the set time, or from the calculated dusk/dawn times.
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ceedee

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Re: Dusk dawn question
« Reply #5 on: August 12, 2018, 05:38:47 PM »

Yes before or after by up to 30 mins

Dusk:  Does -30 mean if the sun sets at 6:00 pm the devices are turned on/off at 5:30 pm?  (+30 6:30 pm)?
Dawn: Does -30 mean if the sun rises at 6:00 am the devices are turned on/off at 5:30 am? (+30 6:30 am) ?
It is randomized with the randomizing window; plus or minus, UP TO thirty minutes from the set time, or from the calculated dusk/dawn times.
Not sure that I agree with this.  When I set offset times, my lights turn on relative to sunset times.  If I set the offset to -5, the light turns on 5 minutes before sunset...not dusk.  Perhaps I am confused.

BTW, do not mix sunrise/sunset and dusk/dawn terminology. They are completely different.  For instance, civil, nautical, and astronomical dusk times occur AFTER sunset!
« Last Edit: August 12, 2018, 05:43:36 PM by ceedee »
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dave w

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Re: Dusk dawn question
« Reply #6 on: August 13, 2018, 09:34:43 PM »

Not sure that I agree with this.  When I set offset times, my lights turn on relative to sunset times.  If I set the offset to -5, the light turns on 5 minutes before sunset...not dusk.  Perhaps I am confused.
No, I think I am.
ceedee's question implied the offset was exactly 30 minutes (or what was set as the offset). I was trying to clarify that the offset is a randomized amount within the set offset limits. 
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ceedee

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Re: Dusk dawn question
« Reply #7 on: August 15, 2018, 08:30:40 AM »

My understanding is that any randomization is related to the "security" function.  That said, the "randomness" of the security function leaves much to be desired.  My comments on this are in another thread.
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