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Sun rise/set, Moon rise/set, twilights and Moon phases at the AAT


Animated moon phases

You will find here graphs and tables showing the nightly variations in the Sun and Moon, and other pertinent data suitable for preparing an observing run. The graphs and tables are organised on a nightly basis (i.e. split at midday), rather than split on calendar days (split at midnight). The data are available as screen displays or down-loadable postscript for high-quality printing.

The USNO Astronomical Application Department web site offers an on-line calculation service for these things if you're not interested in SSO. Go to the USNO AA department and follow the links to Data Services and then to which ever service you want.


The following are displayable (.GIF) plots of Sun rise and set, twilights, Moon rise and set, and Moon phases. There are graphs for the whole year and individual months. Approximately 25Kb each.

2011 2012 2013 2014 2015
whole year whole year whole year whole year whole year
January January January January January
February February February February February
March March March March March
April April April April April
May May May May May
June June June June June
July July July July July
August August August August August
September September September September September
October October October October October
November November November November November
December December December December December


The following are simple text files of the numeric data suitable for displaying on the screen. Approximately 10Kb each.

2011 2012 2013 2014 2015
January January January January January
February February February February February
March March March March March
April April April April April
May May May May May
June June June June June
July July July July July
August August August August August
September September September September September
October October October October October
November November November November November
December December December December December


Here you may download formatted postscript tables of the numeric data for complete years. They are compressed with gzip. Approximately 34Kb each. Remember to SAVE them rather than viewing them.

2011 2012 2013 2014 2015


Here you may download the set of 12 monthly graphs as postscript files. They are also compressed with gzip, but are much larger than the other files - approximately 230Kb each. Remember to SAVE them rather than viewing them.

2011 2012 2013 2014 2015


Following are text files which show the dark/grey/bright breakup for a calendar year for SSO. (better known as "chiaroscuro").

2011 2012 2013 2014 2015
Steven Lee
2011 Feb 14