Sunrise/Sunset Calculator
Python
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README.md
__init__.py
sunrise_sunset.py

README.md

SunriseSunsetCalculator

Calculate the sunset and sunrise time based on the date and the latitude/longitude.

Based on the algorithm found on (archive.org page since the domain is no longer available) : http://web.archive.org/web/20161202180207/http://williams.best.vwh.net/sunrise_sunset_algorithm.htm

To use, simply enter the necessary inputs at the beginning of the script. More info on the zenith parameter can be found here: http://www.timeanddate.com/worldclock/aboutastronomy.html

To use, import the module and create an object like so:

>>> import datetime
>>> from sunrise_sunset import SunriseSunset
>>> ro = SunriseSunset(datetime.datetime.now(), latitude=46.805,
longitude=-71.2316)
>>> rise_time, set_time = ro.calculate()
>>> print rise_time, set_time
2015-12-18 12:25:00 2015-12-18 20:57:00
>>> # Or you can specify the current time zone, like so
>>> ro = SunriseSunset(datetime.datetime.now(), latitude=46.805,
longitude=-71.2316, localOffset=-5)
>>> rise_time, set_time = ro.calculate()
>>> print rise_time, set_time
2015-12-18 07:25:00 2015-12-18 15:57:00

Finally, don't forget to modify the offset for the timezone. Best is to leave it at 0 to get UTC.

Python 3 support

This module is compatible with Python 2 and Python 3. It has been tested under python 2.7.10 and python 3.4.3+ on Ubuntu.

CLI support

A CLI interface is also available. Type python sunrise_sunset.py -h for help. Required arguments are the longitude and the latitude in decimal degrees. You can optionally specify the timezone via an offset to UTC and a specific date for the calculation.