seasonal event schedule:
anniversary (chapter 1/title screen) - from 4/21 to 4/28
christmas (chapter 1/title screen) - from 12/23 to 12/30
halloween (chapter 1) - from 10/28 to 11/4
thanksgiving (chapter 1) - from 11/24 to 12/1
valentines (chapter 6) - from 2/14 to 2/21
thatduck's birthday (chapter 9) - from 2/4 to 2/6
plownouse's birthday (chapter 5) - from 10/13 to 10/15