The Zohar, “Introduction of The Zohar,” Chapter “BeLaila De Kala (Night of the Bride),” Item 135: On the fifteenth of Nissan, David sent a proclamation through all of Israel to go to war. They were with Yoav on the seventh of Sivan, and went and destroyed the land of the children of Amon. They were detained there through Sivan, Tamuz, Av, and Elul, and what happened with Bat Sheba was on the twenty-fourth of Elul. And on Yom Kippur [Day of Atonement], the Creator forgave his iniquity.
Of course, we are not dealing with dates here, but with spiritual degrees. The annual cycle is divided into 12 months, in accordance with the four stages of HaVaYaH multiplied by the three lines. The four seasons, the order of months, and holidays are determined by the mutual inclusion of the Lights of Hochma (Wisdom) and Hassadim (Mercy).
The Jewish calendar is based on the cycles of both the sun and the moon. The sun calendar is the part that pertains to Zeir Anpin, and the lunar months are the part that pertains to Malchut.
These are descriptions of spiritual corrections, depending on the kind of forces and influences are at play. Either Malchut influences Zeir Anpin, or Zeir Anpin influences Malchut. As a result of the correct connection that they build between them, they ascend and attach to Bina, to their supernal mother, who corrects them.
Accordingly, all dates in the lunar cycle have their own spiritual meanings. Every month begins with a new moon and ends before the next new moon. This concerns the thirty Sefirot of HaBaD–HaGaT–NHY, each including the three lines. The states of this system may be subdivided and systematized by its particular Sefirot down to “hours,” “minutes,” and “seconds.”
This would clarify what specific corrections Bat Sheba had undergone with David and Uriah, and why they had fallen on those “dates.”
From the 1st part of the Daily Kabbalah Lesson 11/18/10, “Hakdama, BeLaila De Kala (The Night of the Bride)”
The Work Of Uriah And The Work Of David