A Dates

Appendix A
Dates

Dates in PDF are specified according to the following format:

D:YYYYMMDDHHmmSSOHHmm

where:

YYYY is the year;
MM is the month;
DD is the day (01-31);
HH is the hour (00-23);
mm is the minute (00-59);
SS is the second (00-59);
O is the relationship of local time to Universal Time (UT), denoted by ’+’, ’-’ or ’Z’;
HH is the absolute value of the offset from UT in hours (00-23);
mm is the absolute value of the offset from UT in minutes (00-59).

A contiguous prefix of the parts above can be used instead, for lower accuracy dates. For example:

D:2014 (2014)

D:20140103 (3rd January 2014)

D:201401031854-0800 (3rd January 2014, 6:54PM, US Pacific Standard Time)

These are the possible data formats for -set-metadata-date:

YYYY
YYYY-MM
YYYY-MM-DD
YYYY-MM-DDThh:mmTZD
YYYY-MM-DDThh:mm:ssTZD

where: