Sunrise-Sunset JS

JavaScript client for the Sunrise-Sunset API. This client works in browser and Node.js environments.

Installation

npm install --save sunrise-sunset-api

or

yarn add sunrise-sunset-api

Usage

import {getSunriseSunsetInfo} from "sunrise-sunset-api";

(async function main() {
    const response = await getSunriseSunsetInfo({
        latitude: 36.72016,
        longitude: -44.42034,
    });
})();

The response is in this format. Note that all times are in UTC.

{
    sunrise: "8:02:42 AM",
    sunset: "9:46:40 PM",
    solarNoon: "2:54:41 PM",
    dayLength: "13:43:58",
    civilTwilightBegin: "7:34:56 AM",
    civilTwilightEnd: "10:14:26 PM",
    nauticalTwilightBegin: "7:01:18 AM",
    nauticalTwilightEnd: "10:48:04 PM",
    astronomicalTwilightBegin: "6:25:35 AM",
    astronomicalTwilightEnd: "11:23:47 PM"
}

You can get the response for a specific date (in YYYY-MM-DD format) with the date option. If you don't pass a date, you'll get the response for whatever the API thinks is the current date.

const response = await getSunriseSunsetInfo({
    latitude: 36.72016,
    longitude: -44.42034,
    date: "2021-10-31"
});

You can turn off formatting with the formatted option.

const response = await getSunriseSunsetInfo({
    latitude: 36.72016,
    longitude: -44.42034,
    formatted: false
});

Which makes the info come back in this format: dayLength is an integer number of seconds, and the times are in ISO 8601 format.

{
    sunrise: "2021-05-01T08:02:42+00:00",
    sunset: "2021-05-01T21:46:40+00:00",
    solarNoon: "2021-05-01T14:54:41+00:00",
    dayLength: 49438,
    civilTwilightBegin: "2021-05-01T07:34:56+00:00",
    civilTwilightEnd: "2021-05-01T22:14:26+00:00",
    nauticalTwilightBegin: "2021-05-01T07:01:18+00:00",
    nauticalTwilightEnd: "2021-05-01T22:48:04+00:00",
    astronomicalTwilightBegin: "2021-05-01T06:25:35+00:00",
    astronomicalTwilightEnd: "2021-05-01T23:23:47+00:00"
}

Attribution

Don't forget to properly attribute the Sunrise-Sunset API with a link to their site.

Ky

This client uses Ky to make the API request. Be aware that Ky has a built-in retry mechanism for failed requests.

Ky is built on the Fetch API, and here's an example of how you might handle a Fetch error.

import ky from "ky-universal";

try {
    const response = await getSunriseSunsetInfo({
        latitude: 36.72016,
        longitude: -44.42034,
    });
} catch (error) {
    if (error instanceof ky.HTTPError && error.response.status === 400) {
        // Get the actual body that the API responded with
        console.error(await error.response.json());
    }
    console.error(error);
}

API

getSunriseSunsetInfo(options)

options

Type: object

latitude

Type: number

Should be a value between -90 and 90 (inclusive).

longitude

Type: number

Should be a value between -180 and 180 (inclusive).

date

Type: string | null
Default: current date (according to the API)

Pass this to get the info for a particular date. The value should be in a YYYY-MM-DD format.

formatted

Type: boolean
Default: true

Formatted responses have times like 8:02:42 AM and a dayLength like 13:43:58 (HH:MM:SS format). Unformatted responses have times like 2021-05-01T08:02:42+00:00 (ISO 8601 format) and a dayLength like 49438 (integer number of seconds).

apiUrl

Type: string
Default: https://api.sunrise-sunset.org/json

Pass this to override the API endpoint if it changes, and I am slow to update the code.

kyOptions

Type: object
Default: {}

Pass this to override any Ky options.

useMocks

Type: boolean
Default: false

Turn on mock mode.

Getting the Latitude and Longitude

In the browser, you can use the Geolocation API to get the user's latitude and longitude, assuming the user gives permission.

In a Node.js environment, you can look up the coordinates based on an IP address. There are several APIs for this, like IPinfo, ipstack, and ipapi.

Types

This library is written in TypeScript and exports some types that you might find useful.

import {
    SunriseSunsetOptions,
    UnformattedSunriseSunsetResponse,
    FormattedSunriseSunsetResponse,
    SunriseSunsetResponse
} from "sunrise-sunset-js";

SunriseSunsetOptions describes the object that is passed to getSunriseSunsetInfo.

SunriseSunsetResponse is just a union of the unformatted and formatted responses.

Mocks

For automated tests or for any other situation where you don't want to make actual network requests, you can turn on mock mode, which will make the function return hardcoded responses.

const response = await getSunriseSunsetInfo({
    latitude: 36.72016,
    longitude: -44.42034,
    useMocks: true
});

You can also import the mock responses.

import {
    MOCK_FORMATTED_RESPONSE,
    MOCK_UNFORMATTED_RESPONSE
} from "sunrise-sunset-js";

mockFunction.mockResolvedValue(MOCK_FORMATTED_RESPONSE);

Of course, you can always come up with your own mocks or overwrite specific fields as necessary.

const mockResponse = {
    ...MOCK_FORMATTED_RESPONSE,
    dayLength: "12:00:00"
}

License

MIT