Yes Shalimar stn is in Howrah district of WB.
Presently 2 Pitlines are under construction at Shalimar. All Shalimar originating trains gets maintained presently at Padmapukur Coaching Terminal which is nearby Shalimar stn only. But with increasing demand of SER, and Santragachi Coaching depot which is the main Depot of SER is full no space. So Padmapukur will share load of Santragachi Coaching depot in future and Shalimar Coaching depot will be independent dedicated for Shalimar originating trains in future. Now 2 New Pitlines are constructed at Shalimar and 3 more are planned in future once full Freight load of Shalimar gets shifted to Sankrail Freight Terminal.