Starwatch: the arrival of autumn brings the lovely harvest moon

This is the full moon closest to the autumn equinox, the day when the lengths of day and night are equal

This week watch for the beautiful harvest moon to rise above the horizon on Tuesday. The harvest moon is defined as the full moon closest to the autumnal equinox.

This year, the equinox falls on the 22 September, and the moment of full moon takes place on 21 September at 00.54 BST. The moon will rise from London that evening at 19.37 BST, with 99.8% of its surface illuminated. The nights either side will also present full discs, with almost 99% of the moon's surface lit.