[Babul]

compare each value in a decreasing order: year, month, day, hour, minute, second. when any comparison returns a difference, the date is (depends on how you check it, > or <) bigger.
are all date strings formatted the same way? yours looks like

pawn Код:

format(datestring,sizeof(datestring),"%dth %s %d, %d:%d,%d",day,monthname[month],year,hour,minute,second);

so by using

pawn Код:

sscanf(datestring,"d' 's[16]' 'd','d':'d'.'d",day,month,year,hour,minute,second)

and reordering the comparisons (years before months), it should work