PDF documents use the internal date format: (D:YYYYMMDDHHmmSSOHH'mm'). The date format has these parts:




Part



Description



YYYY



The full four-digit year. 



MM



The month from 01 to 12.



DD



The day from 01 to 31.



HH



The hour from 00 to 23.



mm



The minute from 00 to 59.



SS



The seconds from 00 to 59.



O



The relationship of local time to Universal Time (UT), as denoted by one of the characters +, -, or Z.



HH



The absolute value of the offset from UT in hours specified as 00 to 23.



mm



The absolute value of the offset from UT in minutes specified as 00 to 59.



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