Torah tidbits
WORD OF THE MONTH

A weekly feature of Torah Tidbits to help clarify practical and conceptual aspects of the Jewish Calendar, thereby better fulfilling the mitzva of HaChodesh HaZeh Lachem...

The molad of Kislev was lastTuesday morning (8:02am).Three days (72 hours) later is Friday morning, so the first op forKiddush L’vana would be Friday night. Since we don’t say K.L. on Leil Shabbat (unless it is the last op), we begin saying K.L. this month on Motza’ei Shabbat Parshat To’l’dot, Leil 5 Kislev), Nov. 9th.

Those who follow the 7-day from the Molad opinion will have their first op for K.L. on Tuesday night, Leil 8 Kislev), Nov. 12.

Kislev is the other variable month (Cheshvan is the first), with 30 days during “in order” years and “full” years, and only 29 days during “deficient” years. 5763 is a full year (and M’u’beret, i.e. 13 months). Kislev has 30 days 74½% of the time and 29 days only 25.5% of years. Being variable makes the next Rosh Chodesh also variable. Rosh Chodesh Tevet (which is during Chanuka) is usually 2 days, but is sometimes only 1 day.

More on Kislev...

KISLEV is one of two variable months in our otherwise fixed calendar.
The days per month “officially” alternate through the months of the year. Tishrei always has 30 days. Cheshvan officially has 29, but in about 45% of the years it has 30 days. Kislev regularly has 30 days, but in about ¼ of the years, it has only 29. Tevet always has 29 days. Shvat has 30. Adar (and Adar Sheni) has 29 (but Adar Rishon has 30). Nissan has 30 days, Iyar 29, Sivan 30, Tammuz 29, Menachem Av has 30 days and Elul has 29 days.
Because of the variations of Cheshvan & Kislev, Rosh Chodesh Kislev ends up with more variations than any other Rosh Chodesh. It can be...

Sunday (21.9%)
Sunday & Monday (10.0%)
Tuesday (10.1%)
Tuesday & Wednesday (18.5%)
Thursday (11.5%)
Thursday & Friday (16.5%)
Friday (11.5%)
but NEVER on Shabbat.

With the first of Kislev falling on 6 of the days of the week, it follows that Chanuka can begin on 6 of the 7 days of the week too (unlike all other holidays that can only fall on one of four days each). The first candle (and eighth) of Chanuka can be on any night of the week except for Monday night.


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