There are a couple of Badges that i do not understand the explanation they have on how to obtain them. For example:

Epic Badge (Silver) - Earned at least 200 reputation on 50 days

Does that mean that i need to get 200 reputation in 50 days? How is that possible?

Legendary Badge (Gold) - Earned at least 200 reputation on 150 days

If Epic Badge was tough i think Legendary is for Chuck Norris. Mortarboard (Bronze) is more logical than this two. The way i understand it is that i need to obtain 200 reputation everyday for 50 days (Epic Badge) and 200 rep for 150 days (Epic Badge). Is this correct? Or is it that i need to get 200 reputation in a 50 days time and 200 rep in a 150 days time? Sorry for the lack of understanding of this two.