Even a cursory search of the forums here should have turned up graysky's very helpful "Usage/HowTo" posting here - Howto: fix daylight savings time in pre-R5E50 systems
Cecil even made it sticky so people would be able to find it easier...
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| Daylight Saving Time changes for 2007 http://forums.linhes.org/viewtopic.php?f=5&t=12391 |
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| Author: | tmryan [ Mon Oct 30, 2006 4:31 pm ] |
| Post subject: | Daylight Saving Time changes for 2007 |
I was just reading about how they are mucking around with Daylight Saving Time changes next year (for Canada and US, not sure about other countries): • DST starts on the second Sunday in March at 2:00 A.M. Therefore, DST in 2007 starts three weeks EARLIER than DST in 2006. • DST ends on the first Sunday in November at 2:00 A.M. Therefore, DST ends one week LATER than in prior years. How is this going to affect the clocks in a Linux system? Is there a file that needs to be updated that tells the system the new rules regarding time change? |
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| Author: | Greg Frost [ Mon Oct 30, 2006 5:18 pm ] |
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They did this for the commonwealth games in australia this year and it caused problems. I just changed the xmltv offset in mythtv-setup for that period so that the guide data was also out by an hour and the recordings still worked. |
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| Author: | alien [ Tue Oct 31, 2006 3:11 am ] |
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The TZ changes to DST were announced in 2005, so unless you are running a really old version, it should be fine. TZ definitions can be upgraded when there is a last minute change. See http://www.gatago.com/linux/debian/devel/7223379.html As an aside, linux in general has no problem with invalid/incorrect TZ settings because it is running on UTC (usually). It is things like TV listings which don't use UTC that cause problems. |
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| Author: | Threkk [ Sun Mar 11, 2007 11:18 am ] |
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alien wrote: The TZ changes to DST were announced in 2005, so unless you are running a really old version, it should be fine. R5D1 must be really old then. It's not fine. Anyone got a guide for fixing it? I found a guide for checking your daylight saving time settings And when I ran it on my system I get this Quote: zdump -v /etc/localtime | grep 2007
/etc/localtime Sun Apr 1 07:59:59 2007 UTC = Sun Apr 1 01:59:59 2007 CST isdst=0 gmtoff=-21600 /etc/localtime Sun Apr 1 08:00:00 2007 UTC = Sun Apr 1 03:00:00 2007 CDT isdst=1 gmtoff=-18000 /etc/localtime Sun Oct 28 06:59:59 2007 UTC = Sun Oct 28 01:59:59 2007 CDT isdst=1 gmtoff=-18000 /etc/localtime Sun Oct 28 07:00:00 2007 UTC = Sun Oct 28 01:00:00 2007 CST isdst=0 gmtoff=-21600 It should read Mar 11 instead if Apr 1 and Nov 4 instead of Oct 28. I'm still looking for a howto for fixing it though. |
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| Author: | tjc [ Sun Mar 11, 2007 11:51 am ] |
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Even a cursory search of the forums here should have turned up graysky's very helpful "Usage/HowTo" posting here - Howto: fix daylight savings time in pre-R5E50 systems Cecil even made it sticky so people would be able to find it easier...
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| Author: | Threkk [ Sun Mar 11, 2007 12:22 pm ] |
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Unfortunately I searched for "Daylight saving time" because thats what it's called and that search won't turn up Graysky's guide. (I'll add a thank you post to it and tack on "Daylight saving time" so it should turn up in more searches from now on) Thanks for pointing it out. |
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| Author: | ggulik [ Tue Mar 13, 2007 12:35 pm ] |
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I was under the impression that the current KnoppMyth should be aware of the new timezone changes. However, since Sunday all my recordings have been off by an hour. Before Sunday recordings were working fine. The time on the command line is correct as well as the Progarm Guide on the Front End, yet all recordings are still off? Is this a different problem? |
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| Author: | snaproll [ Thu Mar 15, 2007 7:11 am ] |
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I'm running 4 Mythboxes at the moment, R5D1 & 2 R5E50s, which had no problem.. R5C7 was off an hour, despite my having the 'update file in it. I think the cause was a ntptime server corrected it an hour... I found the hardware clock an hour off Zulu time. Once I reset the hardware clock to Zulu time everything else was OK.... |
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| Author: | ggulik [ Thu Mar 15, 2007 9:41 am ] |
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There was definitely a problem with my R5E50 system then. It continued to record programming off by 1 hour until I stopped and re-started the backend. After I did that everything was fine again. |
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| Author: | tscholl [ Thu Mar 15, 2007 12:20 pm ] |
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The problem could be related to the program database. Myself and others needed to do a refreshed to correct the problem. This is the link: http://mysettopbox.tv/phpBB2/viewtopic.php?t=14546&highlight= |
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