Pambu Panchangam
Pambu Panchangam is the name of a Tamil calendar published by Manonmani Vilasam Press in Chennai since 1883. The publisher's title for the almanac for the Tamil year 2012–2013 is Asal No. 28, Nandana Varsha Suddha Vakya Panchangam. The almanac is popularly referred to as the Pambu Panchangam because the cover page of the almanac carries a prominent image of a snake. The snake referred to here is the Moon in the Panchangam. The image of the snake contains 27 small circles embedded with it. These circles represent the 27 days the Moon takes to complete one full cycle. The reason Moon is represented as a snake is that, due to the pull and push of various planets, its path is like the path left by a snake on sand.