Weekday 09:00 cron example
Parse 0 9 * * 1-5 and inspect its next matching weekdays.
ReadExact fixtures
Weekday and day-OR cron examples
Run known expressions from a fixed start and compare the resulting instants.
Day-of-month or weekday cron example
Use 0 12 15 * 1 to reproduce the POSIX day-field OR rule.
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