Moonphase Build go build Usage Found the phase for date ./moonphase -a phase -d "2024-06-15 12:15:30" The phase is first quarter for date 2024-06-15 Found the next date of phase after date ./moonphase -a date -d "2024-06-15 12:15:30" -p "full moon" The next full moon is for date 2024-06-18