https://github.com/manuelmhtr/countries-and-timezones
Minimalistic library to work with countries and timezones data
https://github.com/manuelmhtr/countries-and-timezones
countries iana iana-tzdb timezones timezones-data
Last synced: 8 days ago
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Minimalistic library to work with countries and timezones data
- Host: GitHub
- URL: https://github.com/manuelmhtr/countries-and-timezones
- Owner: manuelmhtr
- License: mit
- Created: 2016-01-23T23:44:43.000Z (over 9 years ago)
- Default Branch: dev
- Last Pushed: 2025-04-18T03:13:10.000Z (about 1 month ago)
- Last Synced: 2025-04-18T15:28:13.751Z (about 1 month ago)
- Topics: countries, iana, iana-tzdb, timezones, timezones-data
- Language: JavaScript
- Size: 800 KB
- Stars: 248
- Watchers: 2
- Forks: 72
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
# countries-and-timezones
> Minimalistic library to work with countries and timezones data. Updated with the [IANA timezones database](https://www.iana.org/time-zones).
## Usage
### NodeJS
Install with npm or yarn:
```bash
npm install --save countries-and-timezones
```
### Browser
Add the following script to your project (only ~9kb):
```html
var data = ct.getCountry("MX");
console.log(data);
```
## API
### `.getCountry(id, options = {})`
Returns a country referenced by its `id`.
Accepts a parameter with [`options`](#options).
#### Example
```javascript
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`.
#### Example
```javascript
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`](#options).
#### Example
```javascript
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`](#options).
#### Example
```javascript
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`](#options).
#### Example
```javascript
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`](#options).
#### Example
```javascript
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`](#options).
#### Example
```javascript
const ct = require("countries-and-timezones");
const timezone = ct.getCountryForTimezone("Europe/Zurich");
console.log(timezone);
/*
Prints:
{
"id": "CH",
"name": "Switzerland",
"timezones": [
"Europe/Zurich"
]
}
*/
```
### `options`
Available 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. |
## Data models
### Country
A country is defined by the following parameters:
| Parameter | Type | Description |
| ----------- | ------------- | ------------------------------------------------------------------------ |
| `id` | String | The country [ISO 3166-1 code](https://es.wikipedia.org/wiki/ISO_3166-1). |
| `name` | String | Preferred name of the country. |
| `timezones` | Array[String] | The list of timezones used in the country. |
```javascript
{
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'
]
}
```
### Timezone
A timezone is defined by the following parameters:
| Parameter | Type | Description |
| -------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `name` | String | The name of the timezone, from [tz database](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones). |
| `countries` | [String] | A list of [ISO 3166-1 codes](https://es.wikipedia.org/wiki/ISO_3166-1) 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](https://en.wikipedia.org/wiki/Coordinated_Universal_Time). |
| `utcOffsetStr` | String | The difference in hours and minutes between the timezone and [UTC](https://en.wikipedia.org/wiki/Coordinated_Universal_Time), expressed as string with format: `±[hh]:[mm]`. |
| `dstOffset` | Number | The difference in **minutes** between the timezone and [UTC](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) during daylight saving time ([DST](https://en.wikipedia.org/wiki/Daylight_saving_time)). 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](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) during daylight saving time ([DST](https://en.wikipedia.org/wiki/Daylight_saving_time), 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. |
```javascript
{
name: 'Asia/Tel_Aviv',
countries: [ 'IL' ],
utcOffset: 120,
utcOffsetStr: '+02:00',
dstOffset: 180,
dstOffsetStr: '+03:00',
aliasOf: 'Asia/Jerusalem',
deprecated: true
}
```
## Related projects
- [countries-db](https://www.npmjs.com/package/countries-db): Minimalistic lib with countries data.
- [location-by-ip](https://www.npmjs.com/package/location-by-ip): Get the location of any IP address.
## Support
Consider [sponsoring this project](https://github.com/sponsors/manuelmhtr).
## Working on something more complex?
Meet [Spott](https://spott.dev):
- **Search any city, country or administrative division** in the world. By full strings or autocompletion.
- Find a place by an IP address.
- Access to more than 240,000 geographical places. In more than 20 languages.
[](https://spott.dev)
## License
MIT