On Mon, Jan 31, 2022 at 5:36 PM AntiCompositeNumber <
[email protected]> 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,
– Tyler

On Mon, Jan 31, 2022 at 7:32 PM Tyler Cipriani <[email protected]>
> 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 usersβ€”the 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 – the IST timezone had no good time
> to deploy
> > Provide better deployer coverage – 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 πŸ”™ Early Backport
> > 14:00 UTC πŸ”™ Afternoon Backport
> > 21:00 UTC πŸ”™ Evening Backport
> >
> > Train
> >
> > 09:00 UTC πŸš‚ UTC-0 (Antoine) Train
> > 19:00 UTC πŸš‚ 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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> >
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