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Time
ISO 8601 Formatter
Format any date as ISO 8601 — extended, basic, with timezone offsets.
Pin
Inputs
Date / time
Extended (UTC)
2026-05-20T20:02:36.437Z
Date only
2026-05-20
Time only
20:02:36
Basic format
20260520T200236.437Z
Local with offset
2026-05-20T23:02:36.437+03:00
Week date
2026-W21-3
Day of year
140 of 365
