Date Formats Customization
A concise guide to Flatpickr date formatting, display values and accessible calendar labels. Updated technical notes from the previous TRT site.
This URL is retained from the previous TRT website. The text has been revised to point to current official references instead of reproducing an older interface walkthrough.
Choose the value your system needs
A readable date and a stored date do not always have to look the same. Flatpickr uses formatting tokens: Y represents a four-digit year, m a month with a leading zero, and d a day with a leading zero. A pattern such as Y-m-d keeps those components in year–month–day order. Use the library’s reference when choosing other tokens; similarly named libraries may use different conventions. Official reference ↗
Separate display and submission
The dateFormat option controls the underlying date format. With altInput enabled, altFormat can provide a friendlier display while the original input carries the value intended for processing. Decide this together with the system receiving the form. Test how your integration handles an empty value, a manually entered value and an existing value loaded back into the form. Official reference ↗
Make the calendar understandable
ariaDateFormat controls calendar-day labels for assistive technology. Keep those labels meaningful rather than using an abbreviated storage format. Date limits and time options should reflect the actual business rule. The previous version of this article referred to a WordPress form integration; consult the documentation for your installed plugin before assuming that it exposes every Flatpickr option. Official reference ↗