QuestionQ24

Implement Data Pipelines

For the cron expression 0 1 * * * America/Los_Angeles, how does the task behave when Daylight Saving Time changes to Standard Time and the clock moves back by one hour?

Explanation

The schedule matches 1:00 AM local time. When clocks fall back in the America/Los_Angeles time zone, 1:00 AM occurs twice, so a wall-clock cron schedule can execute for both matching local times. Cloud Scheduler documentation notes that repeated local times during clocks moving backward can cause execution anomalies.

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