What year did the TV show "Gunsmoke" change its length from 30 minutes to 1 hour?

More Questions:

What was the date of the first day of the 21st century?

Who is Othello's wife?

Which English playwright wrote the play "The Alchemist"?

Which British prime minister was awarded the Nobel Prize for Literature?

Don Diego's secret identity, "Zorro', is the Spanish word for what animal?

Virginia's Shenandoah River is the largest tributary of what other river?

The US has shoreline along which oceans?

What superhero is known as the "Caped Crusader"?

Who directed Raiders of the Lost Ark?

Who was the winner of the first season of the reality TV show "Survivor"?

Who provided the original voice for Daffy Duck?

What male actor plays the lead role in the 2005 movie "The Island"?

What was the nationality of Franz Liszt?

Who was the protagonist in the book "Fahrenheit 451"?

John Simon Ritchie became famous as who?