Timestamp format

The timestamp_format property controls how dates and times appear in the deliverable’s audit log. It uses MomentJS format tokens.

If not specified, the account’s default timestamp format is used. Set your account default in the dashboard settings.

Setting the timestamp format for an envelope

// POST https://api.signatureapi.com/v1/envelopes
// X-API-Key: key_test_...
// Content-Type: application/json

{
  "title": "Service Agreement",
  "timestamp_format": "MM/DD/YYYY HH:mm:ss",
  "documents": [
    //...
  ],
  "recipients": [
    //...
  ]
}

Format tokens

Use these tokens to build a timestamp format string:

Token	Description
YYYY	Year (four digits)
MM	Month (two digits)
DD	Day (two digits)
HH	Hour (24-hour clock)
hh	Hour (12-hour clock)
mm	Minutes
ss	Seconds

Supported date separators: /, -, ., or a space. Supported time separators: : or ..

Common formats

Format	Example output	Common usage
MM/DD/YYYY HH:mm:ss	12/31/2025 23:59:59	United States
DD/MM/YYYY HH:mm:ss	31/12/2025 23:59:59	Europe, Australia
YYYY-MM-DD HH:mm:ss	2025-12-31 23:59:59	ISO 8601
MM/DD/YYYY hh:mm:ss	12/31/2025 11:59:59 PM	United States (12-hour)
DD.MM.YYYY HH:mm.ss	31.12.2025 23:59.59	Germany, Eastern Europe