Jewish Calendar Months Compared To Gregorian. Here are some examples of dates in the gregorian calendar, and how they relate to the jewish year: The hebrew, or jewish, calendar is both a solar and lunar calendar, as opposed to the gregorian, or civil, calendar which is based on a solar year that is divided.
Nissan 11, 5772=april 3, 2012, july 17, 2012=27 tammuz, 5772. Simply put, the jewish calendar is where the gregorian started from long ago.