[editor-surveyor]

You cannot “convert” from any man made calendar to Yehova’s calendar, as his calendar contains variables for weather blocking the visibility of the new moon, and also retarding the maturation of the barley.

The Aviv moon of 2012 was observed after sundown on March 23, at 9.87 degrees of elevation, and 1.1% of illumination.

[Uri’el-2012]

You cannot “convert” from any man made calendar to Yehova’s calendar, as his calendar contains variables for weather blocking the visibility of the new moon, and also retarding the maturation of the barley.

The Aviv moon of 2012 was observed after sundown on March 23, at 9.87 degrees of elevation, and 1.1% of illumination.

The Rabbis have chosen the Metonic cycle

There is some question about the date of the first of Nisan in 2012.

shalom b'SHEM Yah'shua HaMashiach