On Mon, Jan 31, 2022 at 5:36 PM AntiCompositeNumber <
anticompositenumber(a)gmail.com> wrote:
Are they still pinned to Pacific time for DST, or will
they stay in UTC?
Everything is still anchored to Pacific Time, so currently PST on the
spreadsheet will remain correct year round. The times will spring forward
and fall back with America/Los_Angeles.
Initially, I tried anchoring the calendar to UTC. Then when DST happened
(for most of the world) folks noted their deployment windows were suddenly
an hour earlier than they expected :)
Timezones,
β Tyler
On Mon, Jan 31, 2022 at 7:32 PM Tyler Cipriani <tcipriani(a)wikimedia.org>
wrote:
tl;dr: Backport windows will shift earlier in the (UTC) day starting on
Mon, Feb
14th.
Problem
Some backport windows have few deployers, and windows are not evenly
distributed
for global usersβthe window times slant US-centric.
Solution
tl;dr: we made a spreadsheet (Antoine did, actually).
After discussing with backport and train deployers, we're shifting
backport
window timeslots to:
Evenly distribute backport windows β the IST timezone had no good time
to deploy
Provide better deployer coverage β the late
afternoon backport window
(which previously happened at 4pm Pacific) often had few
deployers (and few
users)
Here's a schedule that will be live Mon, Feb 14th (my Valentine's day
present to you all)
08:00 UTC π Early Backport
14:00 UTC π Afternoon Backport
21:00 UTC π Evening Backport
Train
09:00 UTC π UTC-0 (Antoine) Train
19:00 UTC π UTC-7 (US) Train
Big(ish) Changes
UTC-7 train is an hour earlier
Swapped with the backport window so backport is now after train
UTC-Early backport is much earlier
UTC-Late backport is pretty early, too
<3
Tyler Cipriani (he/him)
Engineering Manager, Release Engineering
Wikimedia Foundation
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