Very useful information. However, Independence day is a different aspect. It is a good co-incidence that it happens in an auspicious month.
Shravana Masa is actually a very auspicious month as per Kannada Calendar. In this month there will be lot of poojas performed for Godesses in many temples. They will not do any or talk about marriages in this month.
In this month really so auspicious(very difficult to understand this kind of works),you know why! because
1. 3 Moon Days(Full moon and No moon as of hindu calander)
2. No Marriage on this month.(If they married this month then delivery of baby would be in Summer like april/may) Secret of Indian Population
3.This is month is good for cultivation
4.sun will start his travell form north to south.
5.night is more then day
An Indian - More Freedom - Less obedient
So when the dark month changes a bright month is expected.The main harvest season starts in Shravana. Next crop arrangements also takes place in this month. Besides this is the month in which some of the Sri Vishnu's incarnatins takes birth.