Timeline of the World

Before Tommy (0 - 2145):
2020: The Innerlands are founded after a major global disaster

March 2144: Dream’s father dies of unknown causes and he becomes the next ruler of the Innerlands

After Tommy (2145 - Present):
July 04, 2145: Point of Origin

July 20, 2145: Events of Episode 3-5

July 24, 2145: Events of Episode 6

July 28, 2145: Events of Episode 7

Aug 21, 2145: Events of Episode 8, beginning of Revolution Arc

Sept 18, 2145: Events of Episode 9

Sept 22, 2145: Events of Episode 10

Sept 30, 2145: Events of Episode 11

Oct 8, 2145: Events of Episode 12-13, end of Revolution Arc

Nov 9, 2145: Events of Episode 14, beginning of Lmanburg Arc

Dec 19, 2145: Events of Episode 15

Dec 23, 2145: Events of Episode 16-18

Dec 31, 2145: Events of Episode 19

Jan 08, 2146: Events of Episode 20

Feb 21, 2146: Events of Episode 21

Mar 15, 2146: Events of Episode 22

Mar 19, 2146: Events of Episode 23

Mar 23, 2146: Events of Episode 24

Mar 31, 2146: Events of Episode 25-26

Apr 04, 2146, Events of Episode 267

Apr 30, 2146: Events of Episode 28

May 08, 2146: Events of Episode 29

May 28, 2146, Events of Episode 30

Jun 06, 2146: Events of Episode 31

Aug 03, 2146: Events of Episode 32

Aug 15, 2146: Events of Episode 33

Nov 24, 2146: Death of Wilbur and Schlatt

Nov 24, 2146: Events of Episode 34-35, End of Season 1

Jan 07, 2147: Events of Episode 36, Beginning of Season 2

Jan 23, 2147: Events of Episode 37

Jan 31, 2147: Events of Episode 38

Feb 04, 2147: Events of Episode 39

Feb 12, 2147: Events of Episode 40

Feb 29, 2147: Events of Episode 41