HAPPENIN’ OTSEGO for SATURDAY, APRIL 13 Celebrate The Planet EARTH FEST – 11 a.m.-3 p.m. Annual Earth Festival features a clothing swap, an art contest, free paper shredding, workshops and more. Milford Central School, 42 West Main St., Milford. Info, (607) 547-4488. occainfo.org/earth-festival/…