On 2 Jul 2011, at 22:13, Yitzchak Gale wrote:

> [1]http://hackage.haskell.org/package/timezone-series
> [2]http://hackage.haskell.org/package/timezone-olson

I'd just like to add that these timezone packages are fantastic.  They are 
extremely useful if you need accurate conversion between wall-clock times in 
different locations of the world, at arbitrary dates in the past or future, 
taking account of the differing moments at which daylight savings times take 
effect and so on.  [At least one financial institution is now using them to 
avoid losing money that might otherwise happen due to confusion over the exact 
time of expiry of contracts.]  Thanks Yitz.

Regards,
    Malcolm

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