Dial-a-Moon | 2021

What will the Moon look like on any date in 2021? What will it look like on your birthday? Find out at NASA Dial-a-Moon. The example pictured below is for 16 January 2021. Set dates and see views for northern hemisphere and for southern hemisphere readers by following either link. Enter any month and day to see a high definition image. You may leave the universal time (UT) at the default value. If you wish, your local-to-Universal time conversion can be done at this link. Or, type ‘universal time’ into Google. Go back to Dial-a-Moon to enter the UT.

After visiting Dial-a-Moon, scan down that web page for a wealth of additional information about the Moon’s motions and appearance. The images of Dial-a-Moon are made from those of the Lunar Reconnaissance Orbiter (LRO) in low altitude orbit around the Moon since 2009.

A Year of Moon Motions

The collection of accurate images of the Moon for each hour have been made into the movies below, each lasting about 5 minutes. Try watching full screen for the best effect. Versions of the movies are available for readers in the northern and the southern hemispheres.

The Moon’s peculiar wobble and tipping motions are explained at this blog post.

Northern hemisphere

Southern hemisphere

5 thoughts on “Dial-a-Moon | 2021

  1. When my daughter was younger and developing a love for all things natural, I showed her an app that allowed you to see what the moon phase was on any day in history. She looked up all our birthdays and was delighted to find she was born on a new moon (I didn’t know this at the time). Since then, even though she lives in the city, all I have to ask her is the moon waning or waxing and she knows. She also collects driftwood, looks for smooth rocks and refuses to entertain fools. I ‘ve always told her to use her powers for good.

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