ISO 8601 formatter & parser
Right now, in every format
Why ISO 8601?
ISO 8601 (2026-08-05T12:00:00Z) orders fields from largest to smallest, so dates sort correctly as plain text and can't be misread — 05/08/2026 is May 8th in the US and August 5th almost everywhere else, while 2026-08-05 is unambiguous. The trailing Z means UTC; an offset like +05:30 pins the moment without naming a zone.
Tip: an offset is not a time zone. Store instants in UTC, and keep the IANA zone name (like Australia/Sydney) when you need future local times to survive daylight-saving rule changes. Comparing zones? Use the planner.