A 3 hour speed up is an item in Evony TKR (The King's Return).
The description of 3 Hour Speed Up in Evony TKR says:
Reduces remaining time on a timer by 3 hours.
3 Hour Speed Up is known to potentially be obtainable from opening Lv9 Boss Monster Chest, Lv13 Boss Monster Chest, Senior Lava Turtle Chest, Senior Golem Chest, Senior Witch Chest, Senior Warlord Chest, Royal Thief Chest, Lv14 Boss Monster Chest, Lv15 Boss Monster Chest, Legendary Lava Turtle Chest, Legendary Golem Chest, Legendary Witch Chest, Legendary Warlord Chest, Epic Golem Chest, Pile of Speedup, Bulk of Speedup, Mass of Speedup, Epic Witch Chest, Grand Ymir Chest, Super Ymir Chest and Legendary Ymir Chest. The links for each item are below:
Note: This list may be incomplete.