The seforim bring that the eighth day of Chanuka, known as Zos Chanuka, named after the Krias HaTorah of that day, is a very significant day. There are four periods of teshuva that are tied in with Rosh HaShana, three of which are very well known, Zos Chanuka is the fourth. The “Yimei Harachamim” begin with the blowing of the shofar on Rosh Chodesh Elul, calling to each of us to begin our teshuva process. The Gemara tells us that on Rosh Hashana, the tzadikim gemurim, completely righteous individuals, are immediately signed and sealed for a good year. This is the first period of judgment. Ten days later, on Yom Kippur, marks the second period of judgment, one that applies for most of us and after the completely righteous. For the stragglers, the grace period is extended and a third period of judgment culminates on Shmini Atzeres. Then, much after the others, comes the fourth period – Zos Chanuka.
These the respective periods of teshuva, works out to 30 days, 40 days, 52 days and 122 days from Rosh Chodesh Ellul. These four periods are hinted to in the amount of pasukim in the last few parshiyos of the Torah. The 40-day period, reserved for the majority of us, is hinted to in Parshas Netzavim, which has a total of 40 pasukim and speaks about how all of Klal Yisroel stands before Hashem in judgment. The 30-day period, reserved for tzadikim, is hinted to in the number of pasukim in Parshas Vayeilech, which begins with how the tzadik Moshe spent his final days inspiring the yidden to teshuva. The 52-day period is hinted to in Parshas Ha’azinu, as Moshe continues his message of teshuva. Finally, our fourth period, the 122-day program, culminating with Zos Chanuka, is hinted to in the amount of pasukim in Parshas Ki Savo, as a baal teshuva finishes their return to a new destination as a new person.