This was
your sky.
Equinox Sunset
The Sun sets in a slightly different direction every day. While it always sets approximately to the west, on an equinox it sets due west. After the September equinox, the Sun will set increasingly to the southwest, reaching its maximum displacement at the December solstice. Before the equinox, it set to the northwest.
We cannot put this date's photograph on paper at poster size. We can print the nearest public archive plate to your date instead.
Prints are coming soon. The card is free to save and share in the meantime.
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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Released on 21 September 2010 A Nebula by Any Other Name See it as a poster -
Released on 21 September 2010 In the Grip of the Scorpion Claw See it as a poster -
Released on 21 September 2015 Spiral Galaxy M96 from Hubble See it as a poster -
Released on 21 September 2020 Dark Matter Surplus See it as a poster -
Released on 21 September 2022 Neptune Wide-Field (NIRCam Image) See it as a poster
In tropical astrology, 21 SEP 2025 falls under Virgo (♍). The sign's window runs from 08-23 through 09-22. Virgo is the largest zodiac constellation, holding the heart of the Virgo galaxy cluster. The Sun was crossing this region of the sky on 21 SEP 2025.