Grandbosses & raidbosses respawn time:

Antharas [7 days +/- 8 hours]

Baium [3 days +/- 8 hours]

Core [30 +/- 6 hours]

Orfen [30 +/- 6 hours]

Queen Ant [21 +/- 6 hours]

Valakas [7 days +/- 8 hours]

Zaken [40 +/- 8 hours]

Death Lord Hallate [4 +/- 2 hours]

Kernon [4 +/- 2 hours]

Longhorn Golkonda [4 +/- 2 hours]

Shilen's Messenger Cabrio [4 +/- 2 hours]

Antharas Priest Cloe [4 +/- 1 hours]

Beast Lord Behemoth [4 +/- 1 hours]

Bloody Empress Decarbia [4 +/- 1 hours]

Bloody Tree Vermilion [4 +/- 1 hours]

Cherub Galaxia [4 +/- 1 hours]

Death Lord Ipos [4 +/- 1 hours]

Demon's Agent Falston [4 +/- 1 hours]

Eilhalder von Hellmann [4 +/- 1 hours]

Fire of Wrath Shuriel [4 +/- 1 hours]

Gargoyle Lord Tiphon [4 +/- 1 hours]

Hestia,Guardian Deity of the Hot Springs [4 +/- 1 hours]

Last Lesser Giant Glaki [4 +/-1 hours]

Last Lesser Giant Olkuth [4 +/- 1 hours]

Palibati Queen Themis [4 +/- 1 hours]

Storm Winged Naga [4 +/- 1 hours]

Vanor Chief Kandra [4 +/- 1 hours]

Varka's Commander Mos [4 +/- 1 hours]

Varka's Chief Horus [4 +/- 1 hours]

Varka's Hero Shadith [4 +/- 1 hours]

Ketra's Hero Hekaton [4 +/- 1 hours]

Ketra's Commander Tayr [4 +/- 1 hours]

Ketra's Chief Brakki [4 +/- 1 hours]

 

Other Info:

Baium sleep time: 30 minutes.

Antharas/Valakas wait time: 5 minutes.