[PROPOSED] Improve Palestine predictions for 2025 and later
* NEWS: Mention this. * asia (Palestine): Guess Fri>=23, not lastFri, for fallback transitions in the future. Fri>=23 is more consistent with past practice than lastFri. The first differing prediction is a fallback on 2025-10-24, not 2025-10-31. --- NEWS | 10 ++++++++++ asia | 2 +- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/NEWS b/NEWS index a7aa269..d83e01c 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,15 @@ News for the tz database +Unreleased, experimental changes + + Changes to future timestamps + + Predict Palestine fallbacks to be the first Friday on or after + October 23, not October's last Friday, to be more consistent with + past practice. The first differing prediction is a fallback on + 2025-10-24, not 2025-10-31. + + Release 2021e - 2021-10-21 18:41:00 -0700 Changes to future timestamps diff --git a/asia b/asia index dd228e5..6d6b1de 100644 --- a/asia +++ b/asia @@ -3445,7 +3445,7 @@ Rule Palestine 2019 only - Mar 29 0:00 1:00 S Rule Palestine 2019 only - Oct Sat>=24 0:00 0 - Rule Palestine 2020 max - Mar Sat>=24 0:00 1:00 S Rule Palestine 2020 only - Oct 24 1:00 0 - -Rule Palestine 2021 max - Oct lastFri 1:00 0 - +Rule Palestine 2021 max - Oct Fri>=23 1:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Gaza 2:17:52 - LMT 1900 Oct -- 2.31.1
On 2021-10-24 21:03:52 (+0800), Paul Eggert via tz wrote:
Subject: [tz] [PROPOSED] Improve Palestine predictions for 2025 and later
You mean 2021 and later here.
* NEWS: Mention this. * asia (Palestine): Guess Fri>=23, not lastFri, for fallback transitions in the future. Fri>=23 is more consistent with past practice than lastFri. The first differing prediction is a fallback on 2025-10-24, not 2025-10-31.
This seems reasonable. It's still only a prediction but improving the likelihood of not having to fix the transition date with fewer than two weeks notice for a couple of years would be a win. Thank you. Philip -- Philip Paeps Senior Reality Engineer Alternative Enterprises
On 10/24/21 18:24, Philip Paeps wrote:
On 2021-10-24 21:03:52 (+0800), Paul Eggert via tz wrote:
Subject: [tz] [PROPOSED] Improve Palestine predictions for 2025 and later
You mean 2021 and later here.
It's pretty much the same thing. Although the change is in the "2021 and later" data line, the change doesn't affect any predicted timestamps until timestamps in 2025.
On Sun, 24 Oct 2021 at 21:25, Philip Paeps via tz <tz@iana.org> wrote:
- NEWS: Mention this. - asia (Palestine): Guess Fri>=23, not lastFri, for fallback
transitions in the future. Fri>=23 is more consistent with past practice than lastFri. The first differing prediction is a fallback on 2025-10-24, not 2025-10-31.
This seems reasonable. It's still only a prediction but improving the likelihood of not having to fix the transition date with fewer than two weeks notice for a couple of years would be a win.
It's also similar to how we've been recently handling Palestine's March transition. Recently, both transitions seem to be more-or-less pinned to the last Sunday of the month (*à la* EU rules) so things don't get too badly out-of-sync, but with the actual change taking place on a more-locally-favorable day of that same weekend (which is the part that has been less consistent, of late). I've installed the attached patch to the commentary since it was left unchanged despite the improvement to the prediction. -- Tim Parenti
participants (3)
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Paul Eggert -
Philip Paeps -
Tim Parenti