True Hebrew Calendar. Rosh kodesh โ the date of the new moon for each month is clearly indicated. The jewish year (5784, 5785, etc.) begins on rosh hashanah and ends just before the following rosh hashanah.
It is celebrated on the 14th and 15th day of the last month of the hebrew calendar called adar. The godโs calendar is first mentioned in genesis 1:14, where god appointed the sun and moon to determine.