Package moonphase allows calculation of the phase of Moon and other related data. It's an implementation of php-moon-phase in go.
To install the package on your system, run
go get github.com/dyindude/moonphase
time := time.Date(2007, 10, 1, 24, 0, 0, 0, time.UTC)
//time := time.Now()
m := MoonPhase.New(time)
moonphase is released under the MIT License. It is copyrighted by Ivan Menshykov and the contributors acknowledged below.
github.com/dyindude - Andrew Missel
This package's code and documentation are very closely derived from the php-moon-phase PHP class for calculating the phase of the Moon created by Samir Shah.