The sky on
your birthday.
Solstice on a Spinning Earth
Today is a solstice, which means the Earth's terminator, the line between night and day, is tilted the most. This time-lapse video shows an entire year in twelve seconds. The Meteosat 9 satellite recorded infrared images of Earth every day at the same local time, showing the terminator's changing tilt.
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 December 2025 See it as a poster -
The Earth on your day The Earth on 21 December 2025 · Persian Gulf See it as a poster -
Released on 21 December 2015 SN Refsdal: The First Predicted Supernova Image See it as a poster -
Released on 21 December 2006 Portrait of a dramatic stellar crib* See it as a poster -
Released on 21 December 2022 A Wreath of Star Formation in NGC 7469 See it as a poster -
Released on 21 December 2009 Star Cluster R136 Bursts Out See it as a poster -
Released on 21 December 2023 Webb spots a second lensed supernova in a distant galaxy See it as a poster
In tropical astrology, 21 DEC 2025 falls under Sagittarius (♐). The sign's window runs from 11-22 through 12-21. Sagittarius points straight at the center of the Milky Way, our galaxy's brightest region. The Sun was crossing this region of the sky on 21 DEC 2025.
Questions about December 21, 2025
What space photo was released on December 21, 2025?
NASA's Astronomy Picture of the Day for December 21, 2025 was "Solstice on a Spinning Earth". It's the card at the top of this page.
What was the Moon's phase on December 21, 2025?
A new moon, about 2% lit.
What day of the week was December 21, 2025?
December 21, 2025 was a Sunday, day 355 of the 365 days in 2025.
Was there a meteor shower on December 21, 2025?
Yes: the Ursid shower, peaks tomorrow.
What did the Sun and the Earth look like on December 21, 2025?
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.