This is the 745th most frequent Turkish word.
programına
"To their/its program" or "to the program" (depending on context).
Here, 'programına' is used to indicate possession (the television's program) and direction (joining or attending).
Bu akşam televizyon programına katılacağım.
Tonight I will join the television program.
Here, 'programına' indicates possession (the school's program) and addition/extension.
Okul programına ek olarak, sanat dersleri de verilmektedir.
In addition to the school's program, art classes are also provided.
Here, 'programına' indicates possession (your program) and direction/timing related to joining or matching.