Just posted on the SOTU site, this is on every date apparently:
1:00 - 1:30 Throwdown
1:15 - 1:45 Every Time I Die
1:30 - 2:00 Norma Jean
1:45 - 2:15 Strapping Young Lad
2:00 - 2:30 Opeth
2:15 - 2:45 Chimaira
2:30 - 3:00 From Autumn To Ashes
2:45 - 3:15 Clutch
3:00 - 3:30 Unearth
3:15 - 3:45 Gwar
3:30 - 4:00 Full Blown Chaos
3:45 - 4:15 A Life Once Lost
4:00 - 4:30 Lamb Of God
4:15 - 4:45 All That Remains
4:30 - 5:00 Devildriver
EDIT: the first time slot changes every date apparently, check the site. But Opeth is everyday at 2-2:30
1:00 - 1:30 Throwdown
1:15 - 1:45 Every Time I Die
1:30 - 2:00 Norma Jean
1:45 - 2:15 Strapping Young Lad
2:00 - 2:30 Opeth
2:15 - 2:45 Chimaira
2:30 - 3:00 From Autumn To Ashes
2:45 - 3:15 Clutch
3:00 - 3:30 Unearth
3:15 - 3:45 Gwar
3:30 - 4:00 Full Blown Chaos
3:45 - 4:15 A Life Once Lost
4:00 - 4:30 Lamb Of God
4:15 - 4:45 All That Remains
4:30 - 5:00 Devildriver
EDIT: the first time slot changes every date apparently, check the site. But Opeth is everyday at 2-2:30