The original graphic I posted and sent out with “More ponderings on January, February and March of 2014” said that the first 3 months of 2014 were the last 3 months of the Jewish year 5774.
That was wrong. They are the last three months of the Jewish ecclesiastical year that went from Nisan 5773 to Adar II 5774.
The Jewish calendar numbers the months by the ecclesiastical year which begins with Month 1, called Nisan. It numbers the years beginning in Month 7, called Tishri.
An ordinary Jewish year goes from the first day of the 7th month through months 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 6, in that order.
In a Leap Year, a second 12th month is added; these months are called Adar I and Adar II or 12a and 12b.
A Jewish Leap Year goes from the first day of the 7th month through months 8, 9, 10, 11, 12a, 12b, 1, 2, 3, 4, 5, 6, in that order.
Read more about the Jewish calendar:
Original post (corrected):