Beginning Monday, riders of MARC’s Camden and Penn lines are going to have to master new sets of train arrival and departure times.

The Camden Line will have a new schedule going into effect on Monday, April 2, which will tweak some times.

The new schedule will have the first train leaving Union Station at 6:32 a.m. and arriving at Baltimore at 7:46 a.m., while the last train heading that way leaves at 7:45 p.m. and arrives at 9 p.m.

For riders heading in the opposite direction, the first train leaves Baltimore at 5 a.m. and arrives at Union Station at 6:08 a.m. The last train leaves Baltimore at 6:15 p.m. and arrives in Baltimore at 7:28 p.m.

The Penn Line changes on Monday are relatively minor and will only impact three MARC trains: Northbound trains 532 and 544 and southbound train 445. Check out the full schedule here.

Passengers have to hope that the schedule change doesn’t impact MARC’s improved reliability.