PASADENA ( — Pasadena is celebrating the 200th episode of “The Big Bang Theory” this Thursday.

The city announced via Twitter that Feb. 25th has been declared “The Big Bang Theory Day.”

READ MORE: No Masks Required For Fully Vaccinated Disneyland Guests Beginning Tuesday

The hit CBS comedy features its main characters living in Pasadena and working as Caltech scientists.

READ MORE: Aiden Leos, Boy Killed In Road Rage Shooting, To Receive Plaque At Orange County Zoo

The 200th episode airs Thursday on CBS and will feature Wil Wheaton as a special guest, according to KNX 1070 NEWSRADIO.

MORE NEWS: Southland Braces For Triple-Digit Temperatures, Wildfire Risk

On Saturday night, the show’s co-creator Chuck Lorre and its cast gathered in downtown Los Angeles to celebrate the milestone.

(credit: city of Pasadena / William Boyer)

(credit: city of Pasadena / William Boyer)