The DOS date and time value is an unsigned 32-bit value divided into six fields as follows:
The legal values for each field is listed in the following table.
Field
Value
Year
Offset from 1980 (e.g., decimal 10 is 1990)
Months
1-12
Days
1-31
Hours
0-23
Minutes
0-59
Biseconds
0-29
Each bisecond indicates two seconds.