Sid-day

It's celebrated on 17th of August as per the popular Indian sitcom named "Philophers". The character Sid, who goes by the name "beerbottle", makes it rain beer for his friends. His friends start calling it the Sid-day.

yasho: bruh, why is it raining beer today?
sunil: brah! it's sid-day gif!
kena: here, fill my cup too. i can't come.
rajjo: wait. i am coming too.