tag 26081 notabug thanks On 03/13/2017 12:09 AM, Fevzi Karavelioglu wrote: > Hello, I started getting an error with the following command: > > $> date --date="02:05 tomorrow" +%s > *date: invalid date `02:05 tomorrow'* > > It appears any time 2 in the morning causes the error. But everything else > appears to work fine. This appears to have started after midnight on March > 12 2017. May be something to do with daylight saving as it starts at 2AM?
Everything to do with daylight savings. In fact, it's a FAQ: https://www.gnu.org/software/coreutils/faq/coreutils-faq.html#The-date-command-is-not-working-right_002e You're trying to start from a time that doesn't exist in your timezone, due to it falling within the hour that was skipped. Which is why we recommend that date-relative commands be executed relative to noon rather than midnight, since no (known) timezone makes their daylight savings adjustments at noon, and even if the relative operations land at 11 am or 1 pm after crossing the boundary, you still end up in the right relative day. > *$> date --versiondate (GNU coreutils) 8.13Copyright (C) 2011 Free Software Newer versions of coreutils come with a 'date --debug' option that give you even more insight into failures, including your use case of specifying a time that does not exist in your time zone. I'm closing this as not a bug, but feel free to add further comments to the thread. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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