Three things change, one can’t
Quartz adds a seconds field at the front, numbers weekdays 1–7 starting with Sunday (so Unix 1-5 becomes 2-6, or keep MON-FRI names), and requires “?” in one day field. The fourth difference cannot be fixed in a single expression: Unix runs when either day field matches, but Quartz cannot restrict both. The example 0 9 1 * 1-5 runs on the 1st and on every weekday, so the converter outputs two Quartz expressions to register as two triggers on the same job.
After converting, CronViewer simulates the source and the result for the next 400 days in your time zone, using each platform’s DST policy, and lists any run that appears on only one side. “Equivalent” is shown only when that check passes.
Try these
Questions
What is the Quartz equivalent of 0 0 * * *?
0 0 0 * * ? — midnight every day. The leading 0 is seconds and “?” goes in day-of-week.
Does Quartz support @daily?
No. Quartz has no macros; the converter expands them.