21 December
A list of events which occurred on the 21st of December.

Jean Conan Doyle is born.

Rudy Solari is born.

Gary Downey is born.

Denny Martin Flinn is born.

Barry Gordon and Raymond Singer are born.

Joe Viskocil is born.

Erik Nash is born.

Andy Dick is born.

Leslie McCasky and Michelle Hurd are born.
Fifth day of filming on .

Fifth day of filming on .

Ninety-seventh day of filming on .

 premieres in Ireland and Australia.

Nicole Malgarini is born.
Thirtieth day of filming on .

Christopher Ogden is born.

Fifth day of filming on .

Fiftieth day of filming on .

Erica Lynne Bryan is born.
Second day of filming on .
 released in the US on VHS.

Seventh and final day of filming on .

 airs.

First day of filming on .
Final draft script for  is submitted.

Second day of filming on .

 airs on Sky One in the United Kingdom.

Eighteenth day of filming on .

Star Trek: Voyager season 7 DVD released in Region 1.

Lois Hall dies.

Albert Bettcher dies.

Filming is completed on the second season of .

Unknown year
Steven Dennis and Deborah Everton are born.

de:21. Dezember
es:21 diciembre
it:21 dicembre
nl:21 december
pt:21 de dezembro
ru:21 декабря
sv:21 december