Yosi Rosenblum was born in Tel Aviv about 10:30 PM on a date (mm.dd.yyyy) claiming maximal sum of digits.
On what date (mm.dd.yyyy) will he become Bar Mizvah?
(In reply to re(2): possible solution
You should not be confused - I erred.
A day in Hebrew calendar is of no fixed length and lasts from sunset to sunset.
To be on the safe side In regard of observing the holiness of Shabat, Shabbat ends at nightfall, when three stars are visible,
approximately 40 minutes after sunset
The month lasts from one new moon till the next new moon., about 29 days 12 hrs 44 mnts.
A Hebrew calendar month is 29n or 30 days long, and there are 7 leap years with 13 months (within a cyc le of 19 years
The leap[ years are 3rd, 6th, 8th, 11th, 14th, 17th and 19th (Sloane A057349)
19 Jewish years equal exactly to 19 Julian years.
The Metonic cycle is an approximate common multiple of the tropical year and the synodic month:
19 tropical years = 19*365.242 days = 6939,60 days.
235 synodic months = 235*29.53 days = 6939,55 days
So,Charlie, on your 19th. 38th 57th, 76th and 95th birthdays the Hebrew dates were/will be exactly as on the day you were born
Steve Herman, It applies to you , too.
To err is human...Errare humanum est, perseverare diabolicum.