In the Hebrew calendar, the eighth month is known as Marcheshvan, sometimes spelled Marheshvan or Marcheshwan. It falls between Tishrei and Kislev and is one of only two months whose length can vary between 29 and 30 days. This variability depends on astronomical calculations related to the lunar cycle and the timing of Rosh Hashanah.
Historically, this month is associated with the beginning of the rainy season in Israel, signifying a transition from the dry months of summer to the wetter, cooler months of winter. This shift holds agricultural significance, marking the time for plowing and sowing in preparation for the spring harvest. Because its length is not fixed, Marcheshvan sometimes carries the nickname “Marcheshvan the bitter,” playfully suggesting a sense of uncertainty or even a slight disadvantage compared to months with fixed lengths. However, it also represents a period of anticipation and preparation for the upcoming holidays in Kislev and Tevet.