Start Sun Day with a Sunrise Hike on Pack Monadnock.  Meet at the Miller State Park parking lot. Hike to first overlook via road.

Sun Day is a global day of action on September 21, 2025, celebrating the unstoppable rise of clean, green energy.

Sun Week in Peterborough is a whole week of activities promoting and celebrating a livable planet. There will be a variety of events happening around Peterborough, NH. To see the whole list of events, go here.