8.12
CLDR BCP47 Time Zone Data
CLDR is the Common Locale Data Repository, a database of localization information published by the Unicode Consortium.
The CLDR BCP47 Timezone library is a Racket high-level interface to the timezone.xml file published by the Unicode Consortium as part of CLDR. Unlike most of the packages in the cldr collection, this one is not based on a JSON data set, because the data isn’t available as JSON.
| (require cldr/bcp47/timezone) | package: cldr-bcp47 |
procedure
(bcp47-timezone-ids) → (listof string?)
Returns a list of all the BCP47 time zone IDs.
procedure
(tzid->bcp47-timezone-id tzid) → (or/c string? #f)
tzid : string?
Returns the BCP47 time zone ID correspondng to the given tzid, which
is an Olson/IANA-style time zone ID. If there is no corresponding ID, #f
is returned.
Examples:
> (tzid->bcp47-timezone-id "America/New_York") "usnyc"
> (tzid->bcp47-timezone-id "Fillory/Whitespire") #f
procedure
(bcp47-timezone-id->tzid bcpid) → (or/c string? #f)
bcpid : string?
Returns the Olson/IANA-style time zone ID corresponding to bcpid,
which is a BCP47 time zone identifier. If there is no correspondng ID, #f
is returned.
Examples:
> (bcp47-timezone-id->tzid "uslax") "America/Los_Angeles"
> (bcp47-timezone-id->tzid "abcde") #f
procedure
(bcp47-canonical-tzid tzid) → (or/c string? #f)
tzid : string?
Returns the canonical form (according to BCP47) of the given Olson/IANA-style time zone ID.
If there is no canonical version of tzid then #f is returned.
Examples:
> (bcp47-canonical-tzid "US/Eastern") "America/New_York"
> (bcp47-canonical-tzid "Brazil/Acre") "America/Rio_Branco"