The schedule of events and quests in Empires & Puzzles is quite complex. There are daily, weekly, montly, and yearly cooldowns, quests, and events that each rotate regularly.
2019 Events & Summons Calendar
All dates posited are to be considered tentative and are the author's best informed guesstimate according to when events were held in 2018 and established patterns.
Rare quest dates are not included as they occur anywhere between 8 and 14 days apart, approximately once every two weeks, making them both common and a little unpredictable date-wise.
2019 Tentative Calendar of Events
|Feb 28 - Mar 3||Atlantis|
|March 14 - 17||Fables of Grimforest|
|March 27 - April 9
(or late April)
|March 28 - 31||Atlantis|
|April 11 - 14||Guardians of Teltoc|
|April 25 - 28||Atlantis|
|May 9 - 12|
|May 23 - 26||Atlantis|
|June 13 -16||Riddles of Wonderland *|
|June 24 - July 7||Sand Empire
|June 27 - 30||Atlantis|
|July 11 - 14||Fables of Grimforest|
|July 25 - 28||Atlantis|
|August 8 - 11||Guardians of Teltoc|
|Aug 22 - 25||Atlantis|
|September 12 - 15||Knights of Avalon|
|September 26 - 28||Atlantis|
|October 9 - 13||Pirates of Corellia|
|October 24 - 26||Atlantis|
|Oct 28 - Nov 10||Return to Morlovia|
|November 13 - 17||Riddles of Wonderland|
|November 18 - 20||Costume Event|
|November 21 - 23||Atlantis|
|December 1 - 31||Santa's Challenge
|December 4 - 8||Fables of Grimforest|
|December 16 - 18||Costume Event|
|December 19 - 21||Atlantis|
These dates are tentative, but based upon when they occurred last year, along with well established norms. Actual dates in-game are subject to change.
- Challenge events are in the process of being updated. Pirates is coming back into the rotation in October of 2019, but what comes after may also change order from the previous norm - we'll just have to wait and see!
- In September 2019 SGG shortened Atlantis Rising to a 3-days-event lasting from Thursday till Saturday.
- Costume Events are scheduled for the 3rd Monday of each month and last 48 hours. 
- World Energy: 10 minutes
- Raid Energy: 1 hour
- Titan/Alliance Energy: 4 hours
- Wanted Missions (12 hours between chests)
- Mystic Vision Cooldown (8 hrs)
- New Titan appears (23 hours)
- Two new regular quests.
- A new Rare Quest
- Challenge Event (2nd full weekend - see page for anticipated dates)
- Atlantis Summon (from 4th Thursday of every month to next Saturday)
- Costume Event (3rd Monday to next Wednesday)