Accepted Date Formats for API Integrations
FillFaster Support
Last Update 20 days ago
Date Format Requirement
All dates sent to FillFaster by API should use the international standard date format:
YYYY-MM-DD
YYYY: 4-digit year (e.g., 2024)
MM: 2-digit month (e.g., 06 for June)
DD: 2-digit day (e.g., 05 for the 5th day)
This is the ISO 8601 date format, which is widely used for international data exchange.
Only the date part is used. If you include time or timezone information (e.g., 2024-06-05T14:30:00Z), everything after the date will be ignored.
This format is required for all date fields in your API requests.
Locale and timezone are not required—just the date in the specified format.
| Input Sent to API | Date Used by FillFaster | Notes |
| 2024-06-05 | 2024-06-05 | Correct ISO 8601 format |
| 2024-06-05T14:30:00Z | 2024-06-05 | Time and timezone ignored |
| 2024-06-05 18:00 | 2024-06-05 | Time ignored |
| 2024-06-05T00:00:00+03:00 | 2024-06-05 | Timezone and time ignored |
| 2024/06/05 | (Invalid) | Use dashes -, not slashes / |
| 06-05-2024 | (Invalid) | Use YYYY-MM-DD order |
06/05/2024
05-06-2024
2024/06/05
2024.06.05
2024-6-5
Always use four digits for the year, two for the month, and two for the day, separated by dashes, as in ISO 8601.
Send: YYYY-MM-DD
Ignore: Any time or timezone after the date
Why: Ensures consistent, international, and reliable date handling
If you have any questions or need further examples, please contact our support team.