[Haskell-cafe] why doesn't time allow diff of localtimes ?

[briand at aracnet.com]

On Wed, 31 Mar 2010 01:32:56 -0400
wagnerdm at seas.upenn.edu wrote:

> Two values of LocalTime may well be computed with respect to
> different timezones, which makes the operation you ask for dangerous.
> First convert to UTCTime (with localTimeToUTC), then compare.

that makes sense.  unfortunately getting the current timezone to
convert to UTC results in the dreaded IO contamination problem...

Brian