GlobeTime / Developer time tools

ISO 8601 and local time converter

Convert an ISO 8601 date with an explicit offset to another zone, or resolve a local date and time through daylight saving transitions.

IANA time zone

Example: 2026-10-29T15:00:00+01:00. An offset is required; a date without one does not identify an instant.

ISO 8601 date with Z or ±HH:MM

Local date (YYYY-MM-DD) Local time (HH:mm) If the clock repeats