Calculates the day of the current solar month (Saura-masa).
[Ch. XIV, v.7-11] The solar day count begins at the moment of ingress (Sankranti).
Current day count
Optional
Optional Sun longitude override
Day of the month (1-indexed)
Calculates the day of the current solar month (Saura-masa).
[Ch. XIV, v.7-11] The solar day count begins at the moment of ingress (Sankranti).