All Legendary Pokemon Locations in Pokemon Omega Ruby and Alpha Sapphire

 How and where to catch every legendary Pokemon in Omega Ruby and Alpha Sapphire.

EDIT: Okay, for Uxie, Mesprit, and Azelf it apparently takes 3 max happiness Pokemon in your team. If it still doesn't work out for you it might have something to do with the time of day, so yeah.
00:00 Kyogre/Groudon 
2:00 Rayquaza and Deoxys
5:00 Regice, Regirock, and Registeel (Regi Trio) 
17:43 Regigigas 
22:58 Ho-Oh/Lugia 
29:01 Heatran
32:26 Latios/Latias
34:51 Uxie, Mesprit, and Azelf
37:03 Dialga/Palkia
38:37 Giratina 
40:01 Cobalion, Terrakion, Virizion 
42:24 Reshiram/Zekrom
43:24 Kyurem
44:31 Raikou, Entei, and Suicune (Legendary Dogs)
46:36 Thundurus/Tornadus
48:05 Landorus
49:01 Cresselia