Yes — it computes and lists the next 5 run times based on your browser's local timezone.
Standard 5-field cron syntax with *, ranges (1-5), steps (*/15), and lists (1,3,5) for minute, hour, day-of-month, month, and day-of-week.
When both day-of-month and day-of-week are restricted (not '*'), standard cron semantics treat them as OR'd together — this is real cron behavior, not a bug in the parser.