FAQ 4.13 How do I find the current century or millennium?

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4.13: How do I find the current century or millennium?

    Use the following simple functions:

            sub get_century    {
                    return int((((localtime(shift || time))[5] + 1999))/100);

            sub get_millennium {
                    return 1+int((((localtime(shift || time))[5] + 1899))/1000);

    On some systems, the "POSIX" module's "strftime()" function has been
    extended in a non-standard way to use a %C format, which they sometimes
    claim is the "century". It isn't, because on most such systems, this is
    only the first two digits of the four-digit year, and thus cannot be
    used to reliably determine the current century or millennium.


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