WWE announced the Network schedule during Mania week;
http://www.wwe.com/shows/wrestlemania/30/wrestlemania-week-on-wwe-network-schedule-26198459
All times are EDT;
TUESDAY, APRIL 1
WrestleMania 30 Press Conference
11:00 a.m. - LIVE
7:00 p.m. - Encore
2:00 a.m. - Encore
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THURSDAY, APRIL 3
WrestleMania Today Thursday
6:00 p.m. - 8:00 p.m. - LIVE
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FRIDAY, APRIL 4
WrestleMania 25
2:00 p.m. - 6:00 p.m.
WrestleMania Today Friday
6:00 p.m. - 8:00 p.m. - LIVE
Legends of WrestleMania - series premiere
10:00 p.m. - 11:00 p.m.
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SATURDAY, APRIL 5
WrestleMania Rewind
6:00 a.m. - 9:00 a.m.
WrestleMania 26
9:00 a.m. - 1:00 p.m.
WrestleMania 27
1:00 p.m. - 5:00 p.m.
WrestleMania Today Saturday
6:00 p.m. - 8:00 p.m. - LIVE
Red Carpet at the 2014 WWE Hall of Fame Induction Ceremony
8:00 p.m. - 9:00 p.m. - LIVE
WWE Hall of Fame Ceremony
9:00 p.m. - 11:30 p.m. - LIVE
12:00 a.m. - 2:30 a.m. – Encore
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SUNDAY, APRIL 6
WrestleMania Rewind
6:00 a.m. - 9:00 a.m.
WrestleMania 28
9:00 a.m. - 1:00 p.m.
WrestleMania 29
1:00 p.m. - 4:00 p.m.
WrestleMania Expanded Pre-Show
5:00 p.m. - 6:00 p.m. - LIVE on WWE Network
Also available for FREE on WWE.com, the WWE App, YouTube, Facebook, Twitter, Google+ and Pheed. Spanish Language Pre-Show available from 5:30 p.m. - 6:00 p.m.
WrestleMania Expanded Pre-Show continues, featuring the Pre-Show Match
6:00 p.m. - 7:00 p.m. - LIVE exclusively on WWE Network
WrestleMania 30
7:00 p.m. - 11:00 p.m. - LIVE
WWE Countdown (Most Infamous Gimmicks) - sneak peek
11:00 p.m. ET
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MONDAY, APRIL 7
Raw Pre-Show
7:30 p.m - 8:00 p.m. - LIVE
Raw Backstage Pass
11:00 p.m. - 11:30 p.m. - LIVE
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TUESDAY, APRIL 8
Journey to WrestleMania
9:00 p.m. - 9:30 p.m. ET