Date
From GNUpdf
The string representation of dates used in PDF documents is derived fromt he ISO/IEC 8824 (ASN.1) specification.
The syntax depends on the PDF specification.
For PDF 1.1 to PDF 1.7:
D:YYYYMMDDHHmmSSOHH'mm'
For ISO 32000-1:2008:
D:YYYYMMDDHHmmSSOHH'mm
| date string fields | ||||
|---|---|---|---|---|
| format | field | restrictions | value | default |
| YYYY | Year | required | 0000-9999 | N/A |
| MM | Month | optional | 01-12 | 01 |
| DD | Day | optional | 01-31 | 01 |
| HH | Hour | optional | 00-23 | 00 |
| mm | Minute | optional | 00-59 | 00 |
| SS | Second | optional | 00-59 | 00 |
| O | Relationship with UT (Universal Time) | optional |
| UT is unknown |
| HH | Absolute offset from UT in hours | optional | 00-23 | 00 |
| mm | Absolute offset from UT in minutes | optional | 00-59 | 00 |
