Wed: 1/26 - World Premiere - "Bye Bye Bye"
Thu: 1/27 - Debut at #1
Fri: 1/28 - #1
Mon: 1/31 - #2
Tue: 2/01 - #1
Wed: 2/02 - #1
Thu: 2/03 - #2
Fri: 2/04 - #1
Mon: 2/07 - #1
Tue: 2/08 - #1
Wed: 2/09 - #1------ 10th Day on TRL
Thu: 2/10 - #1
Fri: 2/11 - #1
Mon: 2/14 - #1
Tue: 2/15 - #1
Wed: 2/16 - #1
Thu: 2/17 - #1
Fri: 2/18 - #1
Mon: 2/21 - #1
Tue: 2/22 - #1
Wed: 2/23 - TRL Grammies
Thu: 2/24 - #1 ----- 20th Day on TRL; 14th straight day at #1
Fri: 2/25 - #1
Mon: 2/28 - #1
Tue: 2/29 - #1
Wed: 3/01 - #1
Thu: 3/02 - #1
Fri: 3/03 - #1----- 20th straight day at #1
Mon: 3/06 - #1
Tue: 3/07 - #1
Wed: 3/08 - #1-----Carson is WRONG it's their 23rd day at #1 not the 24th.
Thu: 3/09 - #1-----30th day on TRL
Fri: 3/10 - #1
Mon: 3/13 - #2
Tue: 3/14 - #1
Wed: 3/15 - #1
Thu: 3/16 - #1
Fri: 3/17 - #1
Mon: 3/20 - #1
Tue: 3/21 - #1
Wed: 3/22 - #1
Thu: 3/23 - #1-----40th day on TRL
Fri: 3/24 - #1
Mon: 3/27 - #1
Tue: 3/28 - #1
Wed: 3/29 - #1
Thu: 3/30 - #1
Fri: 3/31 - #1
Mon: 4/03 - #1
Tue: 4/04 - #2
Wed: 4/05 - #1 -----BSB's "Show me the meaning.." retired 2day
Thu: 4/06 - #1-----50th day on TRL
Fri: 4/07 - #1
Mon: 4/10 - #1
Tue: 4/11 - #1
Wed: 4/12 - #1
Thu: 4/13 - #1
Fri: 4/14 - #2
Mon: 4/17 - #2
Tue: 4/18 - #2
Wed: 4/19 - #1
Thu: 4/20 - #1-----60th Day
Fri: 4/21 - #1
Mon: 4/24 - #1
Tue: 4/25 - #1 (i think)
Wed: 4/26 - #4
Thu: 4/27 - #4-----"Bye Bye Bye retires"

Okie well MTV screwed up and they counted the day of the TRL Grammies in which THERE WAS NO COUNTDOWN... so on Wednesday March 8 when they appeared on the show and were told they had been at #1 for 24 days, it was really 23 days.