ISO 8601 Formatting Guide
ISO 8601 is the international standard for representing dates and times. It is unambiguous, naturally sortable, and should be the only format used in APIs and JSON payloads.
| Format | Example | Description |
|---|---|---|
| Date only | 2024-03-15 | Standard YYYY-MM-DD |
| UTC Time | 2024-03-15T14:30:00Z | The 'Z' indicates UTC (Zulu time) |
| Local Time with Offset | 2024-03-15T09:30:00-05:00 | Explicitly showing the offset from UTC |
| Week Date | 2024-W11-5 | Year 2024, Week 11, Day 5 (Friday) |
| Ordinal Date | 2024-075 | The 75th day of 2024 |