Achhe Din 

Promising someone about good days that will come but it's a sham.

With the selection of new government, Achhe Din aaynge.

Achhe Din by Savtang June 4, 2021

Acche Din 

A false promise primarily based on a Good Advertisement, Campaign or in rare cases... assurances of Indian Prime Minister

Example-
Person 1 : "I can't believe I lost 10 Million Dollar. My bank went bankrupt"
Person 2: Don't worry Bro, "Acche Din" will be here.

Acche Din by bikaumedia March 12, 2020