The sky on
your birthday.
The Millennium that Defined Earth
The second millennium saw humanity map the continents and circumnavigate the globe, transforming our understanding of Earth. From being the center of everything, Earth became a planet in the Solar System, then in a galaxy, then in a local group, and finally in a vast universe.
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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Released on 31 December 2003 The cluster RDCS1252.9-2927 (overview) See it as a poster -
Released on 31 December 2018 The smoking gun of a newborn star See it as a poster -
Released on 31 December 2012 Don’t trust your eyes See it as a poster -
Released on 31 December 2017 To Fly Free in Space See it as a poster -
Released on 31 December 2024 The Twisted Disk of NGC 4753 See it as a poster
In tropical astrology, 31 DEC 1999 falls under Capricorn (♑). The sign's window runs from 12-22 through 01-19. Capricorn is the dimmest zodiac constellation, but rich in deep-sky objects south of the celestial equator. The Sun was crossing this region of the sky on 31 DEC 1999.
Questions about December 31, 1999
What space photo was released on December 31, 1999?
NASA's Astronomy Picture of the Day for December 31, 1999 was "The Millennium that Defined Earth". It's the card at the top of this page.
What was the Moon's phase on December 31, 1999?
A last quarter moon, about 38% lit.
What day of the week was December 31, 1999?
December 31, 1999 was a Friday, day 365 of the 365 days in 1999.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.