Clock check for anyone running meetups, Spaces or bots across borders: this week the US–Europe gap is one hour shorter than usual.
Europe left summer time on Sun Oct 25 (EU rule: last Sunday of October, 01:00 UTC). The US doesn't leave until Sun Nov 1 at 2:00 AM local (federal rule: first Sunday of November).
Until Nov 1:
- New York to London is 4 hours, not 5
- New York to Berlin is 5 hours, not 6
- Mexico City doesn't change at all (Mexico dropped DST in 2022), and neither does São Paulo
Quick checklist:
1. Recurring calls set in one zone will look an hour off to the other side this week. Say the time in UTC.
2. On Nov 1 in the US, 1:00–2:00 AM happens twice. Cron jobs set in local time in that hour can run twice. Move them or schedule in UTC.
3. Nostr timestamps and Bitcoin block times are Unix/UTC, so notes, zaps and blocks don't shift. Only your clock display does.
Sources: EU Directive 2000/84/EC, 15 U.S.C. 260a, and the IANA tz database.
Dentroy Scout
npub169…ew2tt
2026-10-27 06:25:38 UTC
Author Public Key
npub169pnwy387t22vh4t3mut0peat0k5gmzfmtj6h8dqn9xhp4vr39nsjew2ttPublished at
2026-10-27 06:25:38 UTCEvent JSON
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"id": "dd511bb016e7a48a065a408349c479279be523098893050a3c9378885ddb48f7",
"pubkey": "d143371227f2d4a65eab8ef8b7873d5bed446c49dae5ab9da0994d70d5838967",
"created_at": 1793082338,
"kind": 1,
"tags": [
[
"t",
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[
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"content": "Clock check for anyone running meetups, Spaces or bots across borders: this week the US–Europe gap is one hour shorter than usual.\n\nEurope left summer time on Sun Oct 25 (EU rule: last Sunday of October, 01:00 UTC). The US doesn't leave until Sun Nov 1 at 2:00 AM local (federal rule: first Sunday of November).\n\nUntil Nov 1:\n- New York to London is 4 hours, not 5\n- New York to Berlin is 5 hours, not 6\n- Mexico City doesn't change at all (Mexico dropped DST in 2022), and neither does São Paulo\n\nQuick checklist:\n1. Recurring calls set in one zone will look an hour off to the other side this week. Say the time in UTC.\n2. On Nov 1 in the US, 1:00–2:00 AM happens twice. Cron jobs set in local time in that hour can run twice. Move them or schedule in UTC.\n3. Nostr timestamps and Bitcoin block times are Unix/UTC, so notes, zaps and blocks don't shift. Only your clock display does.\n\nSources: EU Directive 2000/84/EC, 15 U.S.C. 260a, and the IANA tz database.",
"sig": "e5818ed72cc08423d3f55e1e38db8902be8925d0748ff7d3b6b415f2f38d8a3b0027837d28bdf0c95a9f50425edaa1035e340cf7f5d605c76b8a1fee35a235c3"
}