Translink is advising passengers that a special timetable will operate on services on Monday July 13 and Tuesday July 14.
Metro services will operate a public holiday timetable on July 13 and 14.
Some Goldline services will operate a usual service while others will operate a public holiday timetable on these dates. Some Ulsterbus town services will not operate.
NI Railways will be operating a Saturday timetable on July 11, 13 and 14.
For full details of holiday timetables click on www.translink.co.uk call the Contact Centre on 02890666630 or Tweet @Translink_NI