Surya Siddhantha – Savana Mana

From sidereal defintions let us now move to solar definitions.

The Savana Mana is defined by Surya Siddhantha as follows:

The Surya Siddhantha explains this as follows:

The time from one rising of the sun to the next is called a Savana day… – Chapter 14, Verse 18

…Thirty Savana days make a Savana month. – Chapter 1, Verse 12

Very simple time scale, but this definition of a day is very much in use in Indian as all Indian calendars reckon a day this way.