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Here lie the bugs we fixed. Most of them stayed dead.

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Risen

Timezone bug in scheduler (Zombie #2)

–

“Every time zone. Every time.”

PythonTimezone

Rose from “Timezone bug in scheduler (Zombie #1)”

Death certificate

Status
🧟 Zombie
Cause of death
TimezoneWorked perfectly, except at midnight UTC, during daylight saving, or for anyone else on Earth.
Severity
Critical
Hours to kill
Unknown
Killed by
Nobody yet
Language
Python
Born
29 Mar 2026
Fix merged
Not yet
Buried
Not yet
Times resurrected
2
Component
scheduler
Symptoms
Since the March clock change, some reminders fire twice and some not at all.

Timeline

Every life of this bug, oldest first.

  1. Born as “Timezone bug in scheduler”30 Mar 2025

  2. Fix merged9 Apr 2025

  3. Buried18 Apr 2025

  4. Rose again as “Timezone bug in scheduler (Zombie #1)”26 Oct 2025

  5. Fix merged5 Nov 2025

  6. Buried14 Nov 2025

  7. Rose again as “Timezone bug in scheduler (Zombie #2)”29 Mar 2026

  8. Still walking

Past lives

This bug has died before. Oldest first.

  1. R.I.P.

    Timezone bug in scheduler

    –

    “Died at 00:00 UTC. Still alive in IST.”

    The grave is empty. It rose again.

  2. this grave