2023

All real-world events relating to the universe that occurred in 2023.

January

 * January 8 – aired for the first time.
 * January 11 – Charles Kimbrough died.

February

 * February 1 – George P. Wilbur died.
 * February 19 – aired for the first time.
 * February 26 – aired for the first time.

March

 * March 5 – aired for the first time.
 * March 12 – aired for the first time.

April

 * April 16 –
 * aired for the first time.
 * aired for the first time.
 * April 23 – aired for the first time.
 * April 30 – aired for the first time.

May

 * May 7 – aired for the first time.
 * The twenty-first season of ended.