Solunar API

Latest News:

This is a hobby project.

It's free to use.
It may go down from time to time.
It may have a bug or two.
It gets very little of my attention. I'm not actively maintaining it.

I also have a 'non-hobby' version of the api.

It's not free to use.
It's hosted on AWS and has not gone down since it launced.
It is a new code base, a complete re-write of what is here.
It may have a bug or two, but I'm actively maintaining it.

Usage Documentation:

A GET request is sent and the results are returned in JSON format.

Endpoint: https://api.solunar.org/solunar/latitude,longitude,date,tz

Parameters need to be comma separated values.
Latitude needs to be in decimal degree format with North positive, South negative.
Longitude needs to be in decimal degree format with East positive, West negative.
Date needs to be yyyymmdd format.
tz - timezone for results, needs to be an integer

example usage for a location in Michigan, USA: https://api.solunar.org/solunar/42.66,-84.07,20180207,-4

Its Really that simple.

Try it:

Solunar Theory:

This api calculates solunar times. There is a hypothesis that the times animals and fish are most active and feeding can be predicted based on factors such as sunrise/sunset, moonrise/moonset, moon up/moon down and moonphase. Fisherman and hunters use this data to determine the best days and times of day to catch fish or hunt game.