So for example, if the HH from the file is 00 and the current HH from unix is 20 the diff is 20, but in reality the time diff is only 4.

Says who? I say the difference between 00:00 and 20:00 is 20 hours, not 4 hours. Or maybe I change my mind and say the difference is 748 hours. I'm still right, and you're still wrong.

The point is you didn't provide any information about what days the two different hours are in or how you're determining which days they're in. Or you neglected to state a critical assumption about your problem.

Jim


In reply to Re: one liner diff between HH military times by Jim
in thread one liner diff between HH military times by dirtdog

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.