Credit: Monty Brinton/CBS

CBS has declared Wednesday, March 4, “World CSI Day,” on which it will try to break the Guinness World Record for “Largest Ever TV Drama Simulcast,'” the network announced Thursday.

The event is meant to honor 15 years of the CSI franchise, and the U.S. premiere of CSI: Cyber.

The current record for the largest TV drama simulcast was achieved by the special 50th anniversary episode of Doctor Who, which was broadcast in November 2013 in 98 countries across six continents.

The event will feature a worldwide simulcast of the CSI: Crime Scene Investigation episode “Kitty,” which originally aired as the planted spin-off for CSI: Cyber, which will be the next generation and fourth series in the franchise.

The episode is set to air in over 150 countries at 7 p.m. ET, and will be available for streaming in the U.S. on from 4 p.m. to 12 a.m. PT. CSI: Cyber, starring recent Academy Award winner Patricia Arquette, will premiere the same night in the U.S. at 10 p.m. ET on CBS.

CSI: Crime Scene Investigation premiered in the fall of 2000 and has since spawned three television spin-offs.