10:00pm-11:00pm

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10:00pm-11:00pm (or 22:00-23:00 in 24-hour time) is the twenty-third hour after midnight in a solar day.

Episodes

Picture	Title	Season	Episode number	Production code	Original Airdate
	Day 1 10:00pm-11:00pm	1	23	1AFF22	May 14, 2002
	Alexis Drazen dies. David Palmer fires Patty for conspiring with Sherry against him. Victor Drazen attempts to kill Palmer with an exploding cell phone, but Jack saves him just before the explosion and decides to cover up his survival for the moment. Unknown to Jack, Kim escapes from the Drazens. Andre Drazen takes a call from his source inside CTU, who tells him that CTU has faked Palmer's death. The source is Nina Myers.
	Day 2 10:00pm-11:00pm	2	15	2AFF15	March 4, 2003
	Palmer, Mike and Lynne discuss various ways to dispose of the ticking bomb. They conclude that the desert is the best place to set it off. Jack determines that one man must pilot the plane carrying the bomb. He chooses to fly the plane himself and bids a tearful goodbye to his daughter. Mason eventually takes over for him. Tony and Michelle become suspicious of a Middle Eastern intelligence agent, Yusuf Auda, who is asking questions about the evidence against Syed Ali. Palmer departs for Los Angeles.
	Day 3 10:00pm-11:00pm	3	10	3AFF10	January 13, 2004
	President Palmer asks Sherry to help him deal with Alan Milliken. Jack and Ramon decide to intercept the virus. Chloe's work at CTU is disrupted by a baby. Claudia helps Chase escape, but tragedy strikes during their getaway.
	Day 4 10:00pm-11:00pm	4	16	4AFF16	April 4, 2005
	Jack finds out that Marwan's plans involve a stolen stealth fighter. Tony becomes suspicious of Michelle's personal life upon the arrival of Bill Buchanan from Division. As Mitch Anderson closes in on his target, CTU realizes that President Keeler is in serious danger.
	Day 5 10:00pm-11:00pm	5	16	5AFF16	April 3, 2006
	Jack teams up with Wayne Palmer to help David Palmer's source in the White House: Martha Logan's aide, Evelyn Martin. Hal Gardner has a run in with Wayne, and Jack suspects the Vice President might be behind the days events. Audrey Raines goes along with a plan to remove Bill Buchanan from power in order to keep Chloe O'Brian at CTU to assist Jack.
	Day 6 10:00pm-11:00pm	6	17	6AFF17	April 10, 2007
	President Palmer's retaliatory strike coerces the Ambassador to cooperate with the United States. Jack thwarts Fayed's planned nuclear strike. After subduing the nuclear threat, Jack receives a call from the presumed-dead Audrey Raines.
	Day 7 10:00pm-11:00pm	7	15	7AFF15	March 23, 2009
	Jack and Tony butt heads and endanger a civilian while they try to secure Hodges' bio-weapon at the Port of Alexandria. Ethan makes a decision about his political future, while Olivia Taylor seeks to take advantage of his choice by setting him up for a fall. Larry Moss continues on Jack's trail, but realizes that he may be doing more harm than good.

Background information and notes

Coincidentally, regardless of where it falls in a particular season, this hour often features a major plot twist, turning point, or transition between the larger arcs of that season:

• Day 1: Nina Myers is revealed as a mole inside CTU
• Day 2: Second Wave's nuclear bomb is detonated in the Mojave Desert; George Mason is killed
• Day 3: David Palmer calls Sherry for help, ultimately leading to his resignation
• Day 4: Air Force One is shot down; Charles Logan is introduced
• Day 5: President Charles Logan is revealed as the mastermind behind the Sentox conspiracy
• Day 6: Abu Fayed is eliminated; Audrey Raines is revealed to be alive
• Day 7: Jack Bauer is exposed to the prion variant, which is played out for the rest of the season

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