Cron for the first Monday of the month

Things to check

• Gotcha

  Day-of-month and day-of-week are combined with OR, not AND

  Both the day-of-month field ("1-7") and the day-of-week field ("1") are restricted. Standard cron runs the job when EITHER matches, so this fires more often than most people expect — not only on days that satisfy both.

  Fix: To require both conditions, set one field to * and check the other inside your job (for example `[ "$(date +%u)" = "1" ] || exit 0`).

• Note

  Interpreted in UTC

  A cron expression has no timezone of its own — the scheduler's zone decides when it fires. These times are computed in UTC. The same expression on a host in another zone runs at a different moment.

  Fix: Set the schedule timezone explicitly (TZ= or CRON_TZ= in crontab, `timeZone` in Kubernetes, or the scheduler's own setting). Vercel Cron Jobs always run in UTC.