Timeline

1952

April 15, 1952: Oroku Saki is born.

1958

November 28, 1958: April is born.

1960

May 11, 1960: Master Splinter is born.

1961

August 14, 1961: Leo is born.

1962

April 18, 1962: Raph is born.

October 22, 1962: Donnie is born.

1963

March 11, 1963: Mikey is born.

1970

September 29, 1970: Splinter and the turtles become mutants.

1978

1985 1986
 * The turtles have their first real battle, with the Purple Dragons, and win.
 * The turtles fight the foot ninjas and Shredder for the first time, and win.

December 24, 1986:

1987

January 15, 1987:

January 25, 1987: The turtles, Splinter, Casey, and April still at the Jones farm house in North Hampton during winter, Leo, in the woods, tries to hit a deer with a bow and arrow, but fails to and is trampled by a running deer.

February 10, 1987: Donnie tries to get the water working.

February 15, 1987: Donnie gets the Jones farm house water working.

February 17, 1987: Donnie uses an old type writer.

February 26, 1987: April watches Mikey practice with a punching bag in the barn.

March 2, 1987: Raph checks the front and back of the farm house at night, to make sure everything is quiet.

March 10, 1987: May 1, 1987:
 * Casey and Donnie work together on fixing the truck in the barn.
 * April is walking on ice and the ice cracks to which she falls in, and is rescued by Leo.
 * Splinter and the turtles start training together again.
 * The turtles and Splinter camp in woods.
 * The turtles greet April with flowers in bed.