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Ruby Sunrise


Ruby Sunrise calculates the civil, official, nautical and astronomical sunrise/sunset given latitude/longitude coordinates and the date.


Handles the condition of no sunrise/sunset (Alaska in summer/winter) by returning a nil object.


Ruby Sunrise depends on the 'tzinfo' gem for localizing the computed sunrise/sunset times.


gem install RubySunrise


Copyright 2008-2010 Mike Reedell / LuckyCatLabs.

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.