(7th millennium – 8th millennium – 9th millennium – other millennia) (6th millennium – 7th millennium – 8th millennium – other millennia) The 7th millennium is a period of time which will begin on January 1, 6001 and will end on December 31, 7000. ... (8th millennium – 9th millennium – 10th millennium – other millennia) The 9th millennium is a period of time which will begin on January 1, 8001 and will end on December 31, 9000. ... These pages contain the trends of millennia and centuries. ...

The eighth millennium is a period of time which begins on January 1, 7001 and will end on December 31, 8000. January 1 is the first day of the calendar year in both the Julian and Gregorian calendars. ... December 31 is the 365th day of the year (366th in leap years) in the Gregorian Calendar. ...

Astronomical events

All these dates are in a uniform time scale such as Terrestrial Time. When converted to our ordinary solar time or Universal Time, which is decidedly non-uniform, via ΔT, the dates would be about one day earlier. Because of this difference, these dates have no anniversary relation to historical dates and should not be linked to them. Furthermore, they are only astronomical dates, so they are given in the astronomical format of Year Month Day, which allows them to be ordered. This article is about terrestrial time; for other meanings of TT, see TT (disambiguation). ... Universal Time (UT) is a timescale based on the rotation of the Earth. ... Delta T and delta-T are ASCII substitutes for the formal ΔT, which is Terrestrial Time minus Universal Time. ...

• 7152 September 11: Mars occults Regulus
• 7256 October 12: Mercury occults Regulus
• 7276 September 19: Venus occults Regulus
• 7278 September 15: Mars occults Regulus
• 7321 December 21: Venus occults Regulus
• 7404 September 20: Mars occults Regulus
• 7541 February 14: Jupiter occults Saturn
• 7541 June 18: Jupiter occults Saturn
• 7565 October 17: Mercury occults Regulus
• 7874 October 22: Mercury occults Regulus

The planetoid 90377 Sedna will pass its aphelion in the decades around the year 7800. Mars, with polar ice caps visible. ... In this July, 1997 still frame captured from video, the bright star Aldebaran has just reappeared on the dark limb of the waning crescent moon in this predawn occultation. ... Regulus (α Leo / α Leonis / Alpha Leonis) is the brightest star in the constellation Leo and one of the brightest stars in the nighttime sky. ... For additional meanings, see Mercury (disambiguation). ... (*min temperature refers to cloud tops only) Atmospheric characteristics Atmospheric pressure 9. ... Genitive Jovian Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... Atmospheric characteristics Atmospheric pressure 140 kPa Hydrogen >93% Helium >5% Methane 0. ... Planetoid (meaning planet-like) is an old synonym of asteroid. ... 90377 Sedna is a trans-Neptunian object, discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ...

References

• Simultaneous Transits by Meeus and Vitagliano (pdf, 315KB)
• Conjunctions of Regulus and the planets (in German)
• Accuracy of calculations (in German)