New changes are being made to most schedules starting this weekend.

SEPTA announced the updates will impact the Airport, Chestnut Hill East, Chestnut Hill West, Fox Chase, Glenside, Lansdale/Doylestown, Manayunk/Norristown, Media/Wawa, Paoli/Thorndale, Trenton, Warminster, West Trenton and Wilmington/Newark Lines.

The most significant adjustments will be on the Chestnut Hill East, Wilmington/Newark and Warminster lines, officials said.

According to the transit agency, the new timetables will go into effect Sunday, Jan. 7 and riders are encouraged to check the schedules for new departure and arrival times.

SEPTA officials said the changes will maintain Regional Rail service at 77 percent of pre-COVID levels. Regional Rail ridership has returned gradually and is currently at about 58 percent of pre-pandemic levels.

To see a full list of schedule changes visit SEPTA.org and you can see real-time service updates on the official SEPTA app.