A sentence with the fine print
Most translators turn 0 0 1 * 1 into “at 00:00 on day 1 and on Monday”, which hides the real behaviour. CronViewer says “At 00:00, on day 1 of the month OR on any Monday” and adds a qualifier that Unix cron uses the OR rule. Change the dialect to Spring and the sentence becomes “… on day 1 of the month, but only if it is a Monday” — a very different schedule.
Qualifiers also state the time zone, whether DST applies, and platform caveats such as GitHub’s delayed runs or Kubernetes controller behaviour that a local simulator cannot reproduce. The per-field breakdown underneath gives the meaning of each token for documentation or code review.
Try these
Questions
Can it explain @daily and other macros?
Yes. Macros are expanded in the dialect that supports them; in Jenkins, @daily means H H * * *, a hashed time, and the explanation says so.
Is the English sentence safe to paste into docs?
It is generated deterministically from the parsed fields, so the same expression always gives the same sentence. Include the qualifiers when the day rule or time zone matters.