### Printing the time

TeX has a primitive register that contains "the number of minutes since midnight"; with this knowledge it's a moderately simple programming job to print the time (one that no self-respecting Plain TeX user would bother with anyone else's code for).

However, LaTeX provides no primitive for "time", so the non-programming LaTeX user needs help.

Two packages are available, both providing ranges of ways of printing the date, as well as of the time: this question will concentrate on the time-printing capabilities, and interested users can investigate the documentation for details about dates.

The datetime package defines two time-printing functions: `\``xxivtime` (for 24-hour time), `\``ampmtime` (for 12-hour time) and `\``oclock` (for time-as-words, albeit a slightly eccentric set of words).

The scrtime package (part of the compendious KOMA-Script bundle) takes a package option (`12h` or `24h`) to specify how times are to be printed. The command `\``thistime` then prints the time appropriately (though there's no am or pm in `12h` mode). The `\``thistime` command also takes an optional argument, the character to separate the hours and minutes: the default is of course `:`.

`datetime.sty`
  macros/latex/contrib/datetime (gzipped tar, browse)
`scrtime.sty`
  Distributed as part of macros/latex/contrib/koma-script (gzipped tar, browse)

This question on the Web: http://www.tex.ac.uk/cgi-bin/texfaq2html?label=time