our UNIX admin is not willing to install any module

The question then becomes: are you willing to install a module? Since administrative privileges are not required in order to install a module, anyone with a user account on the server can install one there. Yes, even you can use CPAN so there's no need to go reinventing any wheels.

Good luck!

In reply to Re: convert iso8601 to epoch time without using additional module by hippo
in thread convert iso8601 to epoch time without using additional module by swissknife

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