Which Day Is This Run For?Pipeline · easy · ~10 minA new engineer 'simplified' the daily revenue DAG: instead of the templated date it now computes report_date = date.today() - 1 day inside the task. It passed review and worked all week. Then Monday's run failed at 00:30 and was retried at 09:00 — and quietly wrote SUNDAY'S revenue into the wrong slice. A backfill of last month, run Tuesday, was worse: thirty runs all computed the SAME day.Explain the two disasters with one concept.Evidence

Evidence

Config

Checkpoints

What single concept explains both failures?

The correct implementation?

Reviews missed it because 'it worked'. What review rule and what repair do you apply? Interview-style.