A 30 minute speed up is an item in Evony TKR (The King's Return).
The description of 30 Minute Speed Up in Evony TKR says:
Reduces remaining time on a timer by 30 minutes.
30 Minute Speed Up is known to potentially be obtainable from opening Lv1 Boss Monster Chest, Lv3 Boss Monster Chest, Lv5 Boss Monster Chest, Pile of Speedup, Bulk of Speedup and Mass of Speedup. The links for each item are below:
Note: This list may be incomplete.