This library contains four exported methods:

* utc_to_local(DateTime, Timezone)
* local_to_utc(DateTime, Timezone)
* local_to_local(DateTime, TimezoneFrom, TimezoneTo)
* tz_name(DateTime, Timezone)
Where
DateTime = {date(), time()}
TimeZone(To, From) = String(). E.g. “Europe/Moscow”, “America/NewYork”