Solar & Lunar Years Hindu, Dwadasa Masa Vatsara Smritha !

The Old Julian Calender, named after Julius Caesar, had only 10 months. Seventh month was Saptha Amber, eight Ashta Amber, ninth Nava Amber and tenth Dasa Amber.

12 months = 1 year, defines the Bharata Sastras, Dwadasa Masa Vatsara Smritha.

The Hindu Lunar Calendar is calculated after the Equinoctial New Moon, Amavanta, which is the Luni Solar Zero Point, part of the three Hindu Zero Points on the mighty Ecliptic. The two other Zero Points are the Tropical Zero Point, Sayana Meshadi and Nirayana Meshadi, the Sidereal Zero Point !