Seasonal events

Events

Name	Time	Description
Valentine's Day	February	Broken Heart, Heart Arrows, Valentine Ring
Easter	April	Diseaster Bunnies, which drop Suspicious Looking Eggs, spawn if Lepus has not yet been defeated in that world. Corrupt Bunnies will also drop Suspicious Looking Eggs if Lepus has not been defeated.
Oktoberfest	September 27–October 31	New vanity items become available from the Clothier, and the Merchant sells the Wiesnbräu, a potion.
Halloween	October 10–November 1 October 20–November 10 October 1–November 10	New enemies spawn and some existing enemies wear costumes. Pumpkins grow naturally on grass. All enemies have a 1.25*1/80 (1.25%) chance to drop Goodie Bags, which contain various items. Hearts and Stars are replaced by Candy Apples and Soul Cakes, respectively.
Thanksgiving	November	The Merchant sells the Turkey feather, and all enemies have a 14.29*1/7 (14.29%) chance to drop Cursed stuffing, which can be used to summon Turkor the Ungrateful, a boss, if the Turkey feather is active.
Christmas	December 15–December 31 December 1–January 15	All enemies have a 14.29*1/7 (14.29%) chance of dropping Presents, which contain various items (including the Snow Globe, used to summon the Frost Legion). Hearts and Stars are replaced by Candy Canes and Sugar Plums, respectively.
St. Patrick's Day	March	Rainbow Pieces will occasionally fall from the sky during daytime, and can be crafted into Pot o' Gold which spawns the Leprechaun o'Fyffe pet.

All seasonal events can be "activated" by setting the device's date to any date within the respective event's timespan.
- Change the computer's date to any day within the timespan.
  - If changing the computer's system date is not desired, applications like RunAsDate can launch Terraria with a specific date.
- Disconnect from Xbox Live / PSN and change the console time.
- Disconnect from automatic date/time updates and set the time to any day within the timespan. Note that this may not work for some devices.
- Go to "System Settings" and set the date there.
Completing the Pumpkin Moon or Frost Moon event will also unlock the Halloween or Christmas seasonal event for one in-game day.
All 3DS Seasonal Events are also on Windows Phone.

Mobile 1.3.0.7: Removed Chinese New Year, St. Patrick's Day, Valentine's Day, Easter, Oktoberfest, and Thanksgiving for parity with the Desktop version.

Mobile 1.2.11587: Chinese New Year introduced, but does not normally activate in game.