150 বার্ষিকী (অথবা এটা উদযাপনের

sesquicentennial's Usage Examples:

The best model upon which to form the word is "sesquicentennial", meaning "one hundred and fiftieth anniversary".

Canadian government as Canada 150, occurred in 2017 as Canada marked the sesquicentennial of Canadian Confederation.

and signage have stepped up in recent years in preparation of the sesquicentennial of the Civil War.

After celebrating its sesquicentennial of local ownership and editorial control in 2018, the Reading Eagle.

sesquicentennial's Meaning':

the 150th anniversary (or the celebration of it