From first scheduled departure, Saturday, 2 December - until last scheduled departure, Wednesday, 20 December
(modified at 2023.11.20. 13:13)
Please note that busline 121 is running on an extended route between Újpest-városkapu M (Temesvári utca) and Rákospalota, Kossuth utca. Please board the bus at Rákospalota-Újpest vasútállomás at the bus stop of busline 96 to Újpest.