in reply to
How do I find difference between two timestamps?
Perl's DateTime modules provide an excellent way of dealing with dates and times. Your problem is very similar to one of DateTime's FAQs.
A Programming Language, 1962
Programming the 1900 series in COBOL, 1974
Algorithms + Data Structures = Programs, 1976
The C Programming Language, 1978
System V - Interface definition, 1986
Z80 Assembly Language Programming, 1979
TheSOURCE User's Manual, 1979
The C Primer, 1983
Interactive Fortran 77, A Hands on Approach, 1984
Perl.1 man page, 1991
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