Moon's Age (days past new moon)
To display the moon's age (days past new moon) and appearance for any given date, select the date and time and click on Submit.
You can also display a full year Lunar Calendar (below).
age = 21.456 days
(21 days 10 hours 57 mins)
Day of week = Monday
If you select "Save this Time Zone" that information will be stored in your browser and used automatically when you return (cookies must be enabled).
Click on the Lunar Calendar to display all lunar phases for the current year.
The dates are accurate to within seconds from 1584 - 2100 AD. Outside of that the accuracy decreases to ± 1 day.