Nitrodist
Is there an elixir/erlang library that maps 4 character code regions to cities in the IANA Time Zone format? i.e. US-NY -> "America/New_York"
At my workplace we have a a module of code that does essentially a mapping of two character codes two a specific city in the IANA time zone database.
For example, we have this kind of code:
def tzdb_timezone("CA-ON"), do: "America/Toronto"
def tzdb_timezone("US-NC"), do: "America/New_York"
Does an existing elixir/erlang library do the same?
I’ve done some research on it.
- I’ve looked at ex_cldr and ex_cldr_territories to no avail
- I have looked at the IANA tz data itself for a mapping of it to no avail
- tz and tzdata to no avail
Any additional information or links to existing elixir libraries or Erlang libraries would be greatly appreciated! Thank you in advance.
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mayel
If you can get geocoordinates instead of just a state you could use this:
katafrakt
Ontario from your example lies in 3 time zones. I don’t think you can do a mapping like that which would be generic enough.
kip
If you can provide a UN LOCODE then you can resolve the applicable timezone, or timezones, by calling Cldr.Timezone.fetch/1.
locode is quite useful in lots of applications so maybe that’s a good canonical approach for your requirements too?
Example
iex> Cldr.Timezone.fetch("usnyc")
{:ok, ["America/New_York", "US/Eastern"]}
iex> Cldr.Timezone.fetch("ausyd")
{:ok,
["Australia/Sydney", "Australia/ACT", "Australia/Canberra", "Australia/NSW"]}
iex> Cldr.Timezone.fetch("uslax")
{:ok, ["America/Los_Angeles", "US/Pacific", "US/Pacific-New", "PST8PDT"]}
iex> Cldr.Timezone.fetch("nope")
:error
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