Minimalistic library to work with countries and timezones data
TypeScript
278
77 commits
updated Aug 5, 2026
Minimalistic library to work with countries and timezones data. Updated with the IANA timezones database.
Install with npm or yarn:
npm install --save countries-and-timezones
Add the following script to your project (only ~9kb):
<!-- Latest version -->
<script
src="https://cdn.jsdelivr.net/gh/manuelmhtr/countries-and-timezones@latest/dist/index.min.js"
type="text/javascript"
></script>
<!-- Or specify a version -->
<script
src="https://cdn.jsdelivr.net/gh/manuelmhtr/countries-and-timezones@v3.8.0/dist/index.min.js"
type="text/javascript"
></script>
<!-- This will export a variable named "ct": -->
<script type="text/javascript">
var data = ct.getCountry("MX");
console.log(data);
</script>
.getCountry(id, options = {})Returns a country referenced by its id.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const country = ct.getCountry("DE");
console.log(country);
/*
Prints:
{
id: 'DE',
name: 'Germany',
timezones: [ 'Europe/Berlin', 'Europe/Zurich' ]
}
*/
.getTimezone(name)Returns a timezone referenced by its name.
const ct = require("countries-and-timezones");
const timezone = ct.getTimezone("America/Los_Angeles");
console.log(timezone);
/*
Prints:
{
name: 'America/Los_Angeles',
countries: [ 'US' ],
utcOffset: -480,
utcOffsetStr: '-08:00',
dstOffset: -420,
dstOffsetStr: '-07:00',
aliasOf: null
}
*/
.getAllCountries(options = {})Returns an object with the data of all countries.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const countries = ct.getAllCountries();
console.log(countries);
/*
Prints:
{
AD: {
id: 'AD',
name: 'Andorra',
timezones: [ 'Europe/Andorra' ]
},
AE: {
id: 'AE',
name: 'United Arab Emirates',
timezones: [ 'Asia/Dubai' ]
},
AF: {
id: 'AF',
name: 'Afghanistan',
timezones: [ 'Asia/Kabul' ]
},
AG: {
id: 'AG',
name: 'Antigua and Barbuda',
timezones: [ 'America/Puerto_Rico' ]
},
...
}
*/
.getAllTimezones(options = {})Returns an object with the data of all timezones.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezones = ct.getAllTimezones();
console.log(timezones);
/*
Prints:
{
"Africa/Abidjan": {
"name": "Africa/Abidjan",
"countries": [
"CI", "BF", "GH",
"GM", "GN", "ML",
"MR", "SH", "SL",
"SN", "TG"
],
"utcOffset": 0,
"utcOffsetStr": "+00:00",
"dstOffset": 0,
"dstOffsetStr": "+00:00",
"aliasOf": null
},
"Africa/Algiers": {
"name": "Africa/Algiers",
"countries": [
"DZ"
],
"utcOffset": 60,
"utcOffsetStr": "+01:00",
"dstOffset": 60,
"dstOffsetStr": "+01:00",
"aliasOf": null
},
"Africa/Bissau": {
"name": "Africa/Bissau",
"countries": [
"GW"
],
"utcOffset": 0,
"utcOffsetStr": "+00:00",
"dstOffset": 0,
"dstOffsetStr": "+00:00",
"aliasOf": null
},
...
}
*/
.getTimezonesForCountry(id, options = {})Returns an array with all the timezones of a country given its id.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezones = ct.getTimezonesForCountry("MX");
console.log(timezones);
/*
Prints:
[
{
"name": "America/Bahia_Banderas",
"countries": [ "MX" ],
"utcOffset": -360,
"utcOffsetStr": "-06:00",
"dstOffset": -300,
"dstOffsetStr": "-05:00",
"aliasOf": null
},
{
"name": "America/Cancun",
"countries": [ "MX" ],
"utcOffset": -300,
"utcOffsetStr": "-05:00",
"dstOffset": -300,
"dstOffsetStr": "-05:00",
"aliasOf": null
},
{
"name": "America/Chihuahua",
"countries": [ "MX" ],
"utcOffset": -420,
"utcOffsetStr": "-07:00",
"dstOffset": -360,
"dstOffsetStr": "-06:00",
"aliasOf": null
},
...
}
*/
.getCountriesForTimezone(name, options = {})Returns a list of the countries that uses a timezone given its name. When a timezone has multiple countries the first element is more relevant due to its geographical location.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezone = ct.getCountriesForTimezone("Europe/Zurich");
console.log(timezone);
/*
Prints:
[
{
"id": "CH",
"name": "Switzerland",
"timezones": [
"Europe/Zurich"
]
},
{
"id": "DE",
"name": "Germany",
"timezones": [
"Europe/Berlin",
"Europe/Zurich"
]
},
{
"id": "LI",
"name": "Liechtenstein",
"timezones": [
"Europe/Zurich"
]
}
]
*/
.getCountryForTimezone(name, options = {})Returns a the most relevant country (due to its geographical location) that uses a timezone given its name.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezone = ct.getCountryForTimezone("Europe/Zurich");
console.log(timezone);
/*
Prints:
{
"id": "CH",
"name": "Switzerland",
"timezones": [
"Europe/Zurich"
]
}
*/
optionsAvailable options for functions are:
| Parameter | Type | Description |
|---|---|---|
deprecated | Boolean | Indicates if the result should include deprecated timezones or not. By default no deprecated timezones are included. |
A country is defined by the following parameters:
| Parameter | Type | Description |
|---|---|---|
id | String | The country ISO 3166-1 code. |
name | String | Preferred name of the country. |
timezones | Array[String] | The list of timezones used in the country. |
{
id: 'MX',
name: 'Mexico',
timezones: [
'America/Bahia_Banderas',
'America/Cancun',
'America/Chihuahua',
'America/Hermosillo',
'America/Matamoros',
'America/Mazatlan',
'America/Merida',
'America/Mexico_City',
'America/Monterrey',
'America/Ojinaga',
'America/Tijuana'
]
}
A timezone is defined by the following parameters:
| Parameter | Type | Description |
|---|---|---|
name | String | The name of the timezone, from tz database. |
countries | [String] | A list of ISO 3166-1 codes of the countries where it's used. Etc/*, GMT and UTC timezones don't have associated countries. |
utcOffset | Number | The difference in minutes between the timezone and UTC. |
utcOffsetStr | String | The difference in hours and minutes between the timezone and UTC, expressed as string with format: ±[hh]:[mm]. |
dstOffset | Number | The difference in minutes between the timezone and UTC during daylight saving time (DST). When utcOffset and dstOffset are the same, means that the timezone does not observe a daylight saving time. |
dstOffsetStr | String | The difference in hours and minutes between the timezone and UTC during daylight saving time (DST, expressed as string with format: ±[hh]:[mm]. |
aliasOf | String | The name of a primary timezone in case this is an alias. null means this is a primary timezone. |
deprecated | Boolean | true when the timezone has been deprecated, otherwise this property is not returned. |
{
name: 'Asia/Tel_Aviv',
countries: [ 'IL' ],
utcOffset: 120,
utcOffsetStr: '+02:00',
dstOffset: 180,
dstOffsetStr: '+03:00',
aliasOf: 'Asia/Jerusalem',
deprecated: true
}
Consider sponsoring this project.
Meet Spott:
MIT
Overall
Maintained
Code review
Latest release
Releases this year
44 followers · starred Dec 2024
684 followers · starred May 2023
47 followers · starred Sep 2020
Minimalistic library to work with countries and timezones data
TypeScript
278
77 commits
updated Aug 5, 2026
Minimalistic library to work with countries and timezones data. Updated with the IANA timezones database.
Install with npm or yarn:
npm install --save countries-and-timezones
Add the following script to your project (only ~9kb):
<!-- Latest version -->
<script
src="https://cdn.jsdelivr.net/gh/manuelmhtr/countries-and-timezones@latest/dist/index.min.js"
type="text/javascript"
></script>
<!-- Or specify a version -->
<script
src="https://cdn.jsdelivr.net/gh/manuelmhtr/countries-and-timezones@v3.8.0/dist/index.min.js"
type="text/javascript"
></script>
<!-- This will export a variable named "ct": -->
<script type="text/javascript">
var data = ct.getCountry("MX");
console.log(data);
</script>
.getCountry(id, options = {})Returns a country referenced by its id.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const country = ct.getCountry("DE");
console.log(country);
/*
Prints:
{
id: 'DE',
name: 'Germany',
timezones: [ 'Europe/Berlin', 'Europe/Zurich' ]
}
*/
.getTimezone(name)Returns a timezone referenced by its name.
const ct = require("countries-and-timezones");
const timezone = ct.getTimezone("America/Los_Angeles");
console.log(timezone);
/*
Prints:
{
name: 'America/Los_Angeles',
countries: [ 'US' ],
utcOffset: -480,
utcOffsetStr: '-08:00',
dstOffset: -420,
dstOffsetStr: '-07:00',
aliasOf: null
}
*/
.getAllCountries(options = {})Returns an object with the data of all countries.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const countries = ct.getAllCountries();
console.log(countries);
/*
Prints:
{
AD: {
id: 'AD',
name: 'Andorra',
timezones: [ 'Europe/Andorra' ]
},
AE: {
id: 'AE',
name: 'United Arab Emirates',
timezones: [ 'Asia/Dubai' ]
},
AF: {
id: 'AF',
name: 'Afghanistan',
timezones: [ 'Asia/Kabul' ]
},
AG: {
id: 'AG',
name: 'Antigua and Barbuda',
timezones: [ 'America/Puerto_Rico' ]
},
...
}
*/
.getAllTimezones(options = {})Returns an object with the data of all timezones.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezones = ct.getAllTimezones();
console.log(timezones);
/*
Prints:
{
"Africa/Abidjan": {
"name": "Africa/Abidjan",
"countries": [
"CI", "BF", "GH",
"GM", "GN", "ML",
"MR", "SH", "SL",
"SN", "TG"
],
"utcOffset": 0,
"utcOffsetStr": "+00:00",
"dstOffset": 0,
"dstOffsetStr": "+00:00",
"aliasOf": null
},
"Africa/Algiers": {
"name": "Africa/Algiers",
"countries": [
"DZ"
],
"utcOffset": 60,
"utcOffsetStr": "+01:00",
"dstOffset": 60,
"dstOffsetStr": "+01:00",
"aliasOf": null
},
"Africa/Bissau": {
"name": "Africa/Bissau",
"countries": [
"GW"
],
"utcOffset": 0,
"utcOffsetStr": "+00:00",
"dstOffset": 0,
"dstOffsetStr": "+00:00",
"aliasOf": null
},
...
}
*/
.getTimezonesForCountry(id, options = {})Returns an array with all the timezones of a country given its id.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezones = ct.getTimezonesForCountry("MX");
console.log(timezones);
/*
Prints:
[
{
"name": "America/Bahia_Banderas",
"countries": [ "MX" ],
"utcOffset": -360,
"utcOffsetStr": "-06:00",
"dstOffset": -300,
"dstOffsetStr": "-05:00",
"aliasOf": null
},
{
"name": "America/Cancun",
"countries": [ "MX" ],
"utcOffset": -300,
"utcOffsetStr": "-05:00",
"dstOffset": -300,
"dstOffsetStr": "-05:00",
"aliasOf": null
},
{
"name": "America/Chihuahua",
"countries": [ "MX" ],
"utcOffset": -420,
"utcOffsetStr": "-07:00",
"dstOffset": -360,
"dstOffsetStr": "-06:00",
"aliasOf": null
},
...
}
*/
.getCountriesForTimezone(name, options = {})Returns a list of the countries that uses a timezone given its name. When a timezone has multiple countries the first element is more relevant due to its geographical location.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezone = ct.getCountriesForTimezone("Europe/Zurich");
console.log(timezone);
/*
Prints:
[
{
"id": "CH",
"name": "Switzerland",
"timezones": [
"Europe/Zurich"
]
},
{
"id": "DE",
"name": "Germany",
"timezones": [
"Europe/Berlin",
"Europe/Zurich"
]
},
{
"id": "LI",
"name": "Liechtenstein",
"timezones": [
"Europe/Zurich"
]
}
]
*/
.getCountryForTimezone(name, options = {})Returns a the most relevant country (due to its geographical location) that uses a timezone given its name.
Accepts a parameter with options.
const ct = require("countries-and-timezones");
const timezone = ct.getCountryForTimezone("Europe/Zurich");
console.log(timezone);
/*
Prints:
{
"id": "CH",
"name": "Switzerland",
"timezones": [
"Europe/Zurich"
]
}
*/
optionsAvailable options for functions are:
| Parameter | Type | Description |
|---|---|---|
deprecated | Boolean | Indicates if the result should include deprecated timezones or not. By default no deprecated timezones are included. |
A country is defined by the following parameters:
| Parameter | Type | Description |
|---|---|---|
id | String | The country ISO 3166-1 code. |
name | String | Preferred name of the country. |
timezones | Array[String] | The list of timezones used in the country. |
{
id: 'MX',
name: 'Mexico',
timezones: [
'America/Bahia_Banderas',
'America/Cancun',
'America/Chihuahua',
'America/Hermosillo',
'America/Matamoros',
'America/Mazatlan',
'America/Merida',
'America/Mexico_City',
'America/Monterrey',
'America/Ojinaga',
'America/Tijuana'
]
}
A timezone is defined by the following parameters:
| Parameter | Type | Description |
|---|---|---|
name | String | The name of the timezone, from tz database. |
countries | [String] | A list of ISO 3166-1 codes of the countries where it's used. Etc/*, GMT and UTC timezones don't have associated countries. |
utcOffset | Number | The difference in minutes between the timezone and UTC. |
utcOffsetStr | String | The difference in hours and minutes between the timezone and UTC, expressed as string with format: ±[hh]:[mm]. |
dstOffset | Number | The difference in minutes between the timezone and UTC during daylight saving time (DST). When utcOffset and dstOffset are the same, means that the timezone does not observe a daylight saving time. |
dstOffsetStr | String | The difference in hours and minutes between the timezone and UTC during daylight saving time (DST, expressed as string with format: ±[hh]:[mm]. |
aliasOf | String | The name of a primary timezone in case this is an alias. null means this is a primary timezone. |
deprecated | Boolean | true when the timezone has been deprecated, otherwise this property is not returned. |
{
name: 'Asia/Tel_Aviv',
countries: [ 'IL' ],
utcOffset: 120,
utcOffsetStr: '+02:00',
dstOffset: 180,
dstOffsetStr: '+03:00',
aliasOf: 'Asia/Jerusalem',
deprecated: true
}
Consider sponsoring this project.
Meet Spott:
MIT
Overall
Maintained
Code review
Latest release
Releases this year
44 followers · starred Dec 2024
684 followers · starred May 2023
47 followers · starred Sep 2020