Solar

A Swift helper for generating Sunrise and Sunset times. Swift 3 compatible.

Solar uses an algorithm from the United States Naval Observatory for its calculations.

Usage

Solar needs a date, a timezone and a location specified in latitude and longitude coordinates:

let solar = Solar(withTimeZone: NSTimeZone(name: "Europe/London"), 
		latitude: 51.528308, 
		longitude: -0.1340267)
let sunrise = solar.sunrise
let sunset = solar.sunset

When using Solar, you need to ensure that the timezone used is the timezone existing at the supplied latitude / longitude.

Timezones

Note that all dates are returned in UTC. This means that for timezones other than GMT, the time will appear off. Don't forget to convert your date into the appropriate timezone.

Types of sunrise and sunset

• Official
• Civil
• Nautical
• Astromonical

Convenience methods

Solar also comes packaged with some convenience methods:

let isDaytime = solar.isDaytime
let isNighttime = solar.isNighttime

Installation

Solar is available through CocoaPods and Carthage.

Cocoapods

To install, simply add the following line to your podfile:

pod "Solar"

Then run pod install

Carthage

Add the ceek/Solar project to your Cartfile

github "ceeK/Solar"

Then run carthage update

Todo:

• Documentation
• Unit tests

Future enhancements:

• Calculate more variables relating to solar activity, i.e. Moonrise, Moonset, Moon luminosity.

License

The MIT License (MIT)

Copyright (c) 2016 Chris Howell

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.