The sky on
your birthday.
“Quarter Moons” is copyrighted by Marcella Giulia Pace. NASA has permission to show it and we don't, so it isn't on this card.
See it on NASA's siteThe Moon's quarter phases are when it is half illuminated, either growing towards full or shrinking towards new. The dividing line between light and shadow, called the terminator, runs right down the middle. This image shows both the first and third quarter moons, side by side. Each quarter phase means the Moon has completed a quarter of its orbit around Earth.
The Sun on 21 October 2023
NASA SDO took this picture on 21 October 2023, the day itself, not a release date.
We cannot put this date's photograph on paper at poster size. We can print the nearest public archive plate to your date instead.
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Released on your day
Space pictures released on your month and day in other years, or a few days either side. Each one is sharp enough to print as a poster.
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The Sun on your day The Sun on 21 October 2023 See it as a poster -
The Earth on your day The Earth on 21 October 2023 · Eye of the Sahara, Mauritania See it as a poster -
Released on 21 October 2019 A Familiar Sight See it as a poster -
Released on 21 October 2013 Hubble snaps icy comet ISON See it as a poster -
Released on 21 October 2013 Saturn from Above See it as a poster -
Released on 21 October 2025 4MOST first-light field-of-view See it as a poster -
Released on 21 October 2024 The French atoll of Bassas da India in the Mozambique Channel See it as a poster
In tropical astrology, 21 OCT 2023 falls under Libra (♎). The sign's window runs from 09-23 through 10-22. Libra is the only zodiac constellation named for an inanimate object, the scales of judgment. The Sun was crossing this region of the sky on 21 OCT 2023.
Questions about October 21, 2023
What space photo was released on October 21, 2023?
NASA's Astronomy Picture of the Day for October 21, 2023 was "Quarter Moons". It's a photographer's copyrighted image, so we link to it on NASA's site and show the Sun or the Earth that day instead.
What was the Moon's phase on October 21, 2023?
A first quarter moon, about 43% lit.
What day of the week was October 21, 2023?
October 21, 2023 was a Saturday, day 294 of the 365 days in 2023.
Was there a meteor shower on October 21, 2023?
Yes: the Orionid shower, peak tonight.
What did the Sun and the Earth look like on October 21, 2023?
NASA's Solar Dynamics Observatory photographed the Sun that day, and NASA's Terra satellite photographed the whole Earth. Both are on this page, next to the card.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.