[erlang-questions] Timezone calculations

Taavi Talvik <>
Thu Sep 18 22:03:22 CEST 2008

On Sep 18, 2008, at 10:18 PM, Juan Jose Comellas wrote:

> I need to perform time calculations based on arbitrary (user- 
> supplied) timezones and I haven't found anything in Erlang/OTP that  
> lets me determine the offset (in minutes or seconds) that a timezone  
> has against UTC. The calendar module only supports converting times  
> from UTC into the local timezone and the other way around, but what  
> if what I want is to convert a time to another timezone that is not  
> my local one?
> I'd prefer a portable solution, but even if there is an easy way to  
> access the Olson/zoneinfo tz database on Linux that would be  
> acceptable.

os:cmd("date args..").

It is reasonably easy to run existing external tools from erlang and  
capture results.
Reimplementing everything probably does not make sense.

best regards,

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