The Largest First Quarter Moon of the Year


December 18th, 2015

With the completion and publication of my latest book, Easy Things to See With a Small Telescope, I haven’t had a lot of time (and energy) to post about recent astronomical events. Having said that, all of the visible planets can only be seen in the pre-dawn sky leaving the evening hours to be occupied by the Moon – and the Geminid meteor shower.

Today the Moon reaches first quarter, thereby making it visible throughout till about midnight, and dimming the light of faint Pisces. It also happens to be the largest first quarter Moon of the year, although you’re not likely to notice any observable difference in size.

In just a week, the Moon will turn full on December 25th, for the first time since 1977. By itself, this doesn’t mean much, but for me, it marks an important anniversary. For it was on Christmas Eve, 1977, that I first became fascinated by the stars… but that’s a story for another time.


All Astronomical Events for December 18th, 2015

15:14 UT – First Quarter Moon. With an apparent diameter of 32.205’, this is the largest first quarter moon of the year. (Naked eye, Pisces, evening sky.)



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

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

Astronomical events taken from 2015: An Astronomical Year, available in Kindle and paperback formats from Amazon in the US, Canada and the United Kingdom. Night sky simulations created using Mobile Observatory for Android devices.

2016 An Astronomical Year Paperback Cover 2016 The Night Sky Sights The Astronomical Almanac 2015-2019 Kindle Cover - Deep Sky Observer's Guide

Easy Things to See With a Small Telescope

2016: An Astronomical Year 2016: The Night Sky Sights The Astronomical Almanac (2015-2019) The Deep Sky Observer’s Guide

(Kindle & Paperback)

(Kindle & Paperback) (Kindle & Paperback) (Kindle & Paperback)


Amazon – US

Amazon – US Amazon – US Amazon – US Amazon – US
Amazon – UK Amazon – UK  Amazon – UK Amazon – UK

Amazon – UK

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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