Sherry Landa wrote:
......"using a calendar converter I discovered that because the HebrewThe Hebrew calendar has only 12 months. In order to keep it accurately it
adds a 13 month 4 times every 19 years. In principle the difference in a
particular age is not more than a few weeks and it's automatically amended
every 19 years, when the Gregorian and Jewish Calendars meet.
Dr Shimon Barak