Cheshvan: 29 or 30 days and the Scorpio correspondence
Cheshvan is the eighth month counting from Nisan and the second after the Tishrei year boundary. Unlike many Hebrew months, it can have 29 or 30 days in the fixed calendar. It follows Tishrei and precedes Kislev, whose length can also vary.
Prepared by Mazalogy · Published · Our editorial approach
| Hebrew name | חשוון |
|---|---|
| Order counted from Nisan | 8 |
| Days in the fixed calendar | 29 or 30 |
| Gra letter | נ · Nun |
| Gra zodiac correspondence | Scorpio |
| Gra faculty, concise gloss | Smell |
Why the thirtieth needs a year
Cheshvan is also called Marcheshvan, and calendar records may write Heshvan. These spellings do not describe different month lengths. To know whether 30 Cheshvan exists, you need the actual Hebrew year. A month name alone cannot settle the question.
The fixed calendar adjusts Cheshvan and Kislev within its permitted year patterns. Compare the end of Cheshvan in two selected years, writing the month length beside each year number. The changing boundary is a calendar property, not an error in the conversion or a symbolic trait of that year.
Sources: Chabad · The Jewish Month: order and fixed-calendar lengths
Reading a quieter month without inventing a void
Chabad’s Cheshvan introduction contrasts it with the many festivals of Tishrei and reflects on returning to daily activity. Such an interpretation belongs to its religious setting. “No major festival in this overview” does not mean that every community calendar is empty or that no historical dates are remembered.
Use the quieter layout to learn how to read ordinary dates and Rosh Chodesh. Check the end of Tishrei, the days of Cheshvan and the beginning of Kislev. A calendar can be useful for routine planning without attaching a dramatic meaning to every square.
Sources: Chabad · Cheshvan month introduction
Nun, Scorpio and the Gra version
In the Gra version of Sefer Yetzirah, Cheshvan is associated with Nun (נ) and Scorpio; Mazalogy renders the connected faculty as “smell.” This is a named textual correspondence, not a calculated natal Sun position.
In the Gra version, Cheshvan corresponds to Nun, Scorpio and smell. To practise source literacy, locate the letter in the named passage and compare the faculty sequence with the other linked version. Record a difference you can actually find. A comparison is more informative than assuming that all versions share one universal table.
Sources: Sefer Yetzirah · Gra version, chapter 5:9 · Sefer Yetzirah · Compare another version, chapter 5:1–2
Use it in a calendar or birthday record
If your original birthday is 30 Cheshvan, keep that exact date before calculating an anniversary in a year without it. Birthday and yahrzeit conventions are separate algorithms. Our missing-thirtieth guide and the linked Hebcal documentation explain why the event and chosen convention must accompany a recurrence result.
Sources: Hebcal · Birthday and yahrzeit calculation conventions
Continue from Cheshvan
Explore the Hebrew calendar · Find your Hebrew birthday · Study the correspondence system
Sources and approach
Prepared with AI assistance using the linked sources and original reading exercises. Calendar facts, named textual correspondences and contemporary applications are kept distinct. The Gra version is the reference for this table; other versions can assign faculties differently.