On Monday, January 20th (Martin Luther King Jr. Day), all Commuter Rail trains will operate on a regular weekday schedule.
MBTA.com/holidays
Affected lines: Newburyport/Rockport Line Haverhill Line Lowell Line Fitchburg Line Framingham/Worcester Line Needham Line Franklin/Foxboro Line Fairmount Line Providence/Stoughton Line Middleborough/Lakeville Line Kingston Line Greenbush Line