A special power in every single hour during these days
By immersing in the 40 Se'ah of purity, each single Se'ah casts out 10 forces of impurity. And then the verse is fulfilled in them: "And I will remove the spirit of impurity from the land" (Zechariah 13:2).

"I am my beloved's and my beloved is mine, who grazes among the roses" (Shir HaShirim 6:3).
Roses (Shoshanim) — A rose (Shoshana) has 13 petals, says the Zohar, corresponding to the 13 Attributes of Mercy. All of this unfolds right now during these forty days. What are these forty days? It is when this matter opens up.
The matter is deeply significant. Pay attention:

A ritual bath of purity (Mikveh) that a person immerses in contains 40 Se'ah (biblical measurement) of purity. 40 Se'ah of water that purify a person. When a person immerses, they become pure.
All of the "Other Side" (Sitra Achra / realm of impurity), contains 400 forces of impurity that accompany a person. Heaven forbid, when a person follows the evil inclination, there are 400 forces of impurity. Where do they originate? "And behold, Eisav came, and four hundred men with him" (Genesis 32:7). There are 400 forces of impurity corresponding to the 400 men who came with Eisav. They accompany a person, Heaven forbid, when they walk along paths that are not good.
By immersing in the 40 Se'ah of purity, each single Se'ah casts out 10 forces of impurity. And then the verse is fulfilled in them: "And I will remove the spirit of impurity from the land" (Zechariah 13:2).
In the moment one immerses in a Mikveh of 40 Se'ah...
In a Mikveh, there are 40 Se'ah. Each Se'ah contains 24 Log (liquid measurement). How many Login (plural form of Log) are there in 40 Se'ah? Let's calculate: 40 multiplied by 24 equals 960. There are 960 Login, and they are what purify and cleanse the person. 960 Log.
Now let's see: 960 Log purify a person. Now let's look at these days—we have 40 days, from Rosh Chodesh Elul until Yom Kippur.
During these 40 days, each day has 24 hours. Calculate: 24 multiplied by 40 equals 960!
It turns out we have 960 hours! Each day has 24 hours, giving us 960 hours across these 40 days. They hold the power to take a person, purify them, and rectify them!