Format of the time is typically month/date/year - e.g. 4/5/2009. It requires a full four digit year, and the date must be after 1/1/1970.
Time2 is a date that should be after time1; it makes the program look for dates in this range.
zen ttyp2 random.trouble.o Sat Mar 21 16:24 - 11:43 (19:19)
This program wants everything from the date on; in this case, the:
"Sat Mar 21 16:24 - 11:43 (19:19)" bit. Note that it calculates
the time the user was on from the parenthesized time, not the time
after the "-", which doesn't do multiple days, etc. very well.
It doesn't understand certain things like "still logged in":
zen ftp 208.197.253.142 Sun Mar 22 13:49 still logged in
And other valid last entries from last(1).
dan farmer zen@fish.com EarthLink