This file defines starting year and day in game time and format of date.

In PSTEE we have:

2DA V1.0
0
                        VALUE
STARTTIME               0
STARTYEAR               0
NORMALDAYMONTHFORMAT    15981
SPECIALDAYMONTHFORMAT   16001

Where:
First number determines day in given year when game is started (as defined in GTIMES.IDS). In our case it is simply the 1st day of the first year.
Second number is just the starting year and next two numbers are strrefs to dialog.tlk filled by tokens that show date (15981 is for example "<DAY> <MONTHNAME>" ).