next full moon:
next new moon:
next first quarter:
next last quarter:
next june solstice:
next december solstice:
next march equinox:
next september equinox:
This is a calendar with a clock face, where the moon and the sun are used as true reference points.
Calculation error is less than 50 seconds. Algorithms by Jean Meeus. 14 kb script with comments for calculating the moon phases and the solstices/equinoxes.
Svg clock faces are handwritten: moon, seasons.
Main page, main script, this page, this script, svg icon, 196px png icon.
Tests. Astronomy with script, moon with script, seasons with script.
The creator and developer (except the book with algorithms) - aqoleg.