Stardates are a dating system used by StarCon and the Federation. It's not quite clear how to read stardates. Its suggested by the Klorox II Colony records that last digits just before the decimal point seems to relate to "days". For example Harry Kerry mentions 50 hours passing between first and second entry. The stardate changes from 3012.68 to 3015.68 (12 and 15 digits seem to represent passing days, while the first 2 digitans and decimal digits remain constant for whatever reason). .68 is less likely to represent a year as the game takes place in February 3009 or 3010 of standard earth dating.