Deborah Pickett

Tipoff from @kw217: Kazakhstan, which has not observed daylight saving for 20 years, is turning the clocks back at 0:00 on 1 March 2024, to 23:00 on leap day February 29 2024.

Definitely playing time zones on Hard Mode, Kazakhstan. Thanks for doing some QA on stacked edge cases for us all!

https://www.timeanddate.com/time/change/kazakhstan

Daylight Saving Time 2024 in Kazakhstan

When do the clocks spring forward or fall back in Kazakhstan? Daylight Saving Time for 2024 and other years.

Feb 29, 2024 at 12:29amWeb
Show threadnimona Feb 29, 2024
@futzle mind you, from what i can tell, this is not daylight savings, but just them merging timezones
Show threadHeliographFeb 29, 2024
@futzle @kw217 oh wow thank you this is rather interesting!! #Kazakhstan #Kazakstan #daylightsaving
Show threadleeceFeb 29, 2024
@futzle @kw217 @rdm
Show threadrdmFeb 29, 2024

@futzle @kw217

Wow! They really are going the full Tim on that!

(Gets popcorn)

Show threaddevopscatsFeb 29, 2024
@futzle @kw217 happy not to have to patch tzdata for that one…
Show threadSteven HiltonFeb 29, 2024

@futzle @kw217 obligatory reference whenever timezones and programming comes up...

https://youtu.be/-5wpm-gesOY?si=LNTtN9bxfaOjCH5w

The Problem with Time & Timezones - Computerphile

YouTube
Show threadJonathan HendryFeb 29, 2024

@futzle @kw217

Looks like Colin Robinson has been doing some consulting in Kazakhstan.

Show threadchxFeb 29, 2024
@futzle @kw217 right but it's not daylight savings, the change is permanent: Kazakhstan will change from using two time zones to observing only one time zone in the entire territory: UTC+5.
Show threadDirkjan OchtmanFeb 29, 2024

@futzle @kw217 this has been public for about a month, though!

https://mm.icann.org/pipermail/tz-announce/2024-February/000081.html

[tz-announce] 2024a release of tz code and data available