What is a Signature Date Field?

A Signature Date Field automatically displays the signer’s actual signature date (and optionally time) on the signed document. It is read-only for signers and filled in once they sign.

You can customize the date and time format, and optionally display a calculated date based on the signature date (e.g., signature date + 3 months). The timezone follows the Signature Request settings.

Signature Date Field creation

Before jumping to the creation options, let’s review the main characteristics of a Signature Date Field:

Parameters	Descriptions
`date_format`	Format used to display the date (e.g., `dd/MM/yyyy`, `MM/dd/yyyy`)
`time_format`	Format used to display the time. Can be null to display only the date, or a format like `HH:mm` or `hh:mm a`
`show_timezone`	Boolean indicating whether to display the timezone abbreviation (e.g., `CEST`) next to the time.
`offset_unit`	Unit of time used to offset the signature date. When `null`, the field will display the exact signature date.
`offset_value`	Number of units to add to the signature date. Ignored if `offset_unit` is `null`. For example, use `offset_unit: "month"` and `offset_value: 3` to display "signature date + 3 months"
`font`	Define the font family, color, size, and style variant configuration.

Signature Date Field creation with Smart Anchors

Smart Anchors allow you to insert a Signature Date within your document using this pattern:

Pattern: {{signer_index|signature_date|format|show_timezone|offset|name}}
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offset: Optional string indicating the delay to apply after the signature date.
- Format: <number><unit>
- Allowed units: D = day, M = month, Y = year
- Pattern (regex): ([0-9]{1,3})([D|M|Y])
- Example: 3M = 3 months
Example: {{s1|signature_date|DD/MM/YYYY HH:mm|t|3M|Date1}}

The Signers index (s1, s2, s3, etc) is determined by the Signers order in the Signature Request. If the index references a non-existent Signer, the Field won’t be created.

Signature Date Field creation with API endpoints

To create a Signature Date using the API endpoints:

Add a Signature Date to an existing Signer using this endpoint:/POST /fields/{signatureRequestId}/documents/{documentId}/fields

Customisation

A Signature Date Field can be customised to fit your needs:

Date format: choose among multiple formats, for example
- DD/MM/YYYY → 27/01/2025
- MM/DD/YYYY → 01/27/2025
- MMMM DD, YYYY → January 27, 2025
Time format: optionally display the time in 24h or 12h format.
Timezone: optionally display the timezone abbreviation (e.g., CEST).
Appearance: configure the font family, color, size, and style variants (same options as Text Fields).