Today’s Astronomical Events – March 21st, 2015

The evening twilight presents a challenge for observers tonight, especially for those in the southern hemisphere. After turning new yesterday, the one day old Moon may be glimpsed above the western horizon and for those in North America, makes a close pass by Mars. Can you see one or both in the sunset glow?

(Click on an image to enlarge.)

Images courtesy of Mobile Observatory.



10:08 UT – The waxing crescent Moon passes Uranus. The Moon may occult Uranus from some parts of the world, but Uranus may be too close to the Sun to be easily found. For observers in the western hemisphere, the occultation will take place during daylight hours and is therefore not visible. (Uranus: magnitude 5.9, diameter 3.3”. Pisces, not visible.)

23:15 UT – The waxing crescent Moon passes Mars. (Mars: 98% illuminated, magnitude 1.3, diameter 4.0”. Pisces, evening sky. See image above.)



Events in bold involve objects and/or events that are easily visible with the naked eye.

All times are in Universal Time (UTC). To convert the time to your timezone, click here.


Learn more about every upcoming astronomical event in 2015 An Astronomical Year (Kindle eBook) and The Astronomical Almanac (2015-2019) (Kindle eBook) and The Astronomical Almanac (2015-2019) (Paperback Edition).

The Amateur Astronomer’s Notebook allows astronomers to log 150 observing sessions and includes an appendix of hundreds of suggested deep sky objects.

Details of all available books across the world can be found here or by visiting the author’s page on Amazon.

If you have any comments or questions, please feel free to contact me at astronomywriter “at”


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