The sky on
your birthday.
Follow The Spots
The Sun rotates on its axis about once every 27 days. You can track this rotation by observing sunspots. This composite image from SOHO's MDI instrument shows sunspots appearing multiple times as they cross the Sun's face over several days in August 1999.
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.
-
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 1999 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 1999.
Questions about October 21, 1999
What space photo was released on October 21, 1999?
NASA's Astronomy Picture of the Day for October 21, 1999 was "Follow The Spots". It's the card at the top of this page.
What was the Moon's phase on October 21, 1999?
A waxing gibbous moon, about 87% lit.
What day of the week was October 21, 1999?
October 21, 1999 was a Thursday, day 294 of the 365 days in 1999.
Was there a meteor shower on October 21, 1999?
Yes: the Orionid shower, peak tonight.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.