Monday marks the nation's observance of Martin Luther King, Jr's birthday.
King’s actual birthday is Tuesday, Jan. 15 – he would have been 84 this year – but the official holiday is always celebrated on the third Monday of January.
It is also a postal holiday, which means there is no regular mail delivery/pickup or retail services.
School districts are closed.
An interfaith prayer service and concert entitled "Shelter Me, O God" is scheduled for 2 p.m. at the Suffolk Y Jewish Community Center. The service will include prayers and scripture readings from various denominations.
The Long Island Rail Road will operate on a Holiday Schedule. There will be 37 extra eastbound and westbound trains, to and from Penn Station, added on various branches to accommodate holiday travelers. Off-peak fares will also be in effect all day.