To be in the current list of calendar events, submissions must be received by 4 p.m. on Mondays prior to publication.City of Somerville cleanup The City of Somerville’s annual “Spring into Clean” event, continues through this Saturday, April 27 -- with the city-wide clean-up on Saturday from 8:30 a.m. until about noon.Individuals or groups may register to participate in the April 27 event at City…