EASTHAM — The Eastham 400 Commemoration Committee will officially announce its plans at 9 a.m. Saturday at First Encounter Beach for the town’s quadricentennial celebration in 2020.

Plans for cultural, religious, civic and educational programs, exhibits and events will presented. The first official meeting of the Eastham 400 Commemorative Committee was held Sept. 24, although the group has been meeting informally for more than a year. The committee members are Jim Russo, George Thomas Ryan, Sylvia Sullivan, Judith Parmelee and Beverly Hobbs.

The 2020 plans in Eastham dovetail with the Plymouth 400 celebration of the voyage of the Mayflower and founding of Plymouth Colony, Russo said. In the initial landing of the Mayflower in 1620 in what is now known as Provincetown, explorers from the vessel first encountered native Americans in the area now known as Eastham.

"That's why we're on the map," Russo said.