Cronlight

Web & utilities

Cron + DST correctness check

Send me one cron expression (or one scheduling snippet) and the timezone your users actually live in. I return a short written report: the next fire times, and every instant where a DST transition makes the schedule run late, early, skip a run, or fire twice. I check against minute-level ground truth, including the awkward zones most tools get wrong: Pacific/Chatham (45-minute spring-forward), Australia/Lord_Howe (30-minute fall-back), Antarctica/Troll (2-hour jump), and zones that skipped a whole calendar day. Plain text, cited, one revision. If your schedule is correct, the report says so.

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