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 <tcipriani@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 users—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 🔙 Early Backport
> 14:00 UTC 🔙 Afternoon Backport
> 21:00 UTC 🔙 Evening Backport
>
> Train
>
> 09:00 UTC 🚂 UTC-0 (Antoine) Train
> 19:00 UTC 🚂 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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