What are "Dropping" names for sniping?

[Oreo]

Title. On NameMC I sometimes see something like "drop time"

 

[Skionz]

It's the time the name will become available.

 

[Oreo]

It's the time the name will become available.

Why is it not available in the first place?

 

[Skionz]

Why is it not available in the first place?

Theres a 37 day grace period before anyone else can take the name.

 

[Cam.]

because you have to wait 37 days after a user changes their name to take the name yourself.
the user who changed the name can change back after only 30 days.