Invasion Event:This is when a crapload of monsters spawn in Pokari and lag the fuck out of you. Go to the middle to obtain the quest from the event NPC and kill whatever monster he tells you to. There is usually 4 waves, but sometimes 6.
Time: Mondays, Tuesdays, Thursdays and Saturdays at 7 PM EST.
Location: Realms 6 - 15.
Mini Events:These are the ones that you get everyday. They have a red marquee scrolling in the middle of your screen for this. It's the ones where you pick the fruit, pick trash from the river, deliver drinks, etc. The event NPC is either in the middle or to the left of the stairs.
Time: 9 AM, 12 PM, 3 PM, 6 PM and 9 PM EST.
Location: Realms 6 -15.
Dreams Event:"Celestial Fruit-Picking" and "Collecting Stardusts". Go to Chauncy the adventurer dispatch, select "Dreams - Trials", and enter it. Talk to Jino and he'll teleport you to a fake Pokari. Go to both sides of the map (east and west) and do both events. When you are done you are rewarded with exp and pet beans/food.
Time: Once a day.
Location: All realms except trading.