Due to engineering works on the Derry train line on Sunday February 26 and Sunday March 5, bus substitutions will be in place between Great Victoria Street and Yorkgate train stations.
Passengers are advised to use bus substitution services from Belfast Great Victoria Street or Lanyon Place stations to Yorkgate.
Passengers from Botanic and City Hospital travelling to Derry should also use bus substitutions from Belfast Great Victoria Street and Lanyon Place.
Read more: Derry's Brooke Scullion highlights her favourite spots in Ireland
A normal timetable will operate between Yorkgate and Derry.
Translink advise passengers to allow plenty of time for their journeys and check before travelling, as bus substitution times may differ from scheduled rail departure times.
NI Railways tickets will also be valid for use on Ulsterbus and Metro scheduled services.
Passengers are advised to check timetables in advance on the Translink website, www.translink.co.uk or by using the Journey Planner app.
For more information on projects and improvements, visit: https://www.translink.co.uk/lineimprovements
READ NEXT:
Derry man looking to end stigma around hospice use after life-changing diagnosis
Derry campaigners say potential running down of Radio Foyle "a slap in the face"
To get the latest breaking news from Co Derry straight to your inbox, sign up to our free newsletter.