Eric, For older dates I have being setting them to 12pm "Noon" eg YYYMMDD1200... such that even if UTC is or is not applied the ±12 hours does not change the date according to the time of day. (There may be a daylight savings time ±13 occur)
- So in many cases I have a date field independent of date\time that I just never display with a timezone. This seemed an acceptable and logical work around to me, picking the time in the middle of a date if I do not care about time of day. Hidden in a serial number date if it has say seconds and milliseconds all zero's, I take this to mean a set date/time, rather than an "organically" captured date. One could test for this and not apply a time offset to such dates. Regards Tony On Wednesday, 21 October 2020 04:56:13 UTC+11, Eric Shulman wrote: > > On Tuesday, October 20, 2020 at 9:45:41 AM UTC-7, Anthony wrote: >> >> Ah, I see what's going on there... great, thank you. >> >> Sorry... there's more... I've been playing with dates and noticed that if >> a date prior to 2 December 1847 is entered in a field (say birth-date) then >> it's displayed as the previous day... so 18471202 is fine but 18471201 >> shows as 30th November 1847 (using <Sview with appropriate formatting). Is >> there something in the TW handles dates? >> >> > This is a TWCore issue. It's mostly (but not entirely) a timezone thing > related to the difference between "localtime" and "UTC" (Universal Time > Coordinated) > > Try entering this at http://TiddlyWiki.com: > <$text text={{!!birth-date}}/><br> > LOCAL TIME: > <$view field="birth-date" format="date" template="MMM DDth YYYY > 0hh:0mm:0ss" /><br> > UTC: > <$view field="birth-date" format="date" template="[UTC]MMM DDth YYYY > 0hh:0mm:0ss" /> > > where the "birth-date" field contains "20201020". > > For example, I am in California, which is currently timezone UTC-7 (i.e., > 7 hours behind UTC). > > The LOCAL TIME result will be: "October 19th 2020 17:00:00" > but the UTC result will be: "October 20th 2020 00:00:00" > > HOWEVER, there *is* something odd going on for any date earlier than > 18831119... > > Set birth-date to "18831119"... > The LOCAL TIME result will be "November 18th 1883 16:00:00" > but the UTC result will be "November 19th 1883 00:00:00" > > Still correct. BUT.. > > Set birth-date to "18831118"... > The LOCAL TIME result will "November 17th 1883 16:07:02" > but the UTC result will be "November 17th 1883 23:59:02" > > There's some kind of weirdness happening with the time portion of the > formatting! > > Note that this is happening on http://TiddlyWiki.com, so it is a TWCore > issue unrelated to any TiddlyTools/Time code. > > I think we need to get Jeremy involved to figure this out. > > -e > > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/b62f52cb-127d-4b6b-9524-b9320e3ef67eo%40googlegroups.com.
