The Hebrew letters of the day based on Sefer Yetzirah

As taught in Sefer Yetzirah, every day of the year is represented by three letters corresponding to its season, the month, and the day of the week.

D
A
Y
Sun. Mon. Tues. Wed. Thurs. Fri. Sat.
Hebrew Letter: Dalet - According to Sefer Yetzirah Hebrew Letter: Kaf - According to Sefer Yetzirah Hebrew Letter: Pei - According to Sefer Yetzirah Hebrew Letter: Reish - According to Sefer Yetzirah Hebrew Letter: Tav - According to Sefer Yetzirah
Beit Gimmel Dalet Kaf Pei Reish Tav

We are taught in Sefer Yetzirah that the twenty-two letters of the Hebrew Alphabet — the twenty-two channels of Divine creative consciousness — divide into three categories:

  • three Mother or Primary letters,
  • seven Double letters,
  • and twelve Simple or Elemental letters.

Each letter of these three categories relates (in one-to-one correspondence) to an individual element in each of the three general dimensions of created reality:

  • space (עולם)
  • time (שנה)
  • soul (נפש)

3 Mother letters

In relation to the dimension of time, the three “Mother” letters correspond to the seasons of the year and are divided in the following manner:

  • The summer (the three Hebrew months of TamuzAvElul), is represented by the letter shin (the letter of fire),
  • the winter (the three Hebrew months of TevetShevatAdar) is represented by mem (the letter of water),
  • and the two intermediate seasons of:
    spring (the three Hebrew months of NissanIyarSivan),
    and fall (the three Hebrew months of TishreiCheshvanKislev) are represented by alef (the letter of air).

7 double letters

The seven Double letters (double because they each represent two sounds, hard and soft) correspond to the seven days of the week, and are divided in the following manner:

12 Simple or Elemental letters

The twelve remaining letters are categorized as Simple or Elemental and correspond to the twelve Hebrew months of the year, as follows:

Letter corresponding Hebrew month approximate civil months
Hei Nissan Mar-Apr
Vav Iyar Apr-May
Zayin Sivan May-Jun
Chet Tamuz Jun-Jul
Tet Av Jul-Aug
Yud Elul Aug-Sep
Lamed Tishrei  Sep-Oct
Nun Cheshvan Oct-Nov
Samech Kislev Nov-Dec
Ayin Tevet Dec-Jan
Tzadik Shevat Jan-Feb
Kuf Adar Feb-Mar

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