I apologize that you were not told that Friday would not have come because they know I'll BATAN on Thursday after work. Every Friday we have to go to Conference at the ITB.
I'm sorry for not telling you that Friday will not be BATAN because I just came to know on Thursday after work. Every Friday we have to seminars at ITB.
I'm sorry I didn't tell you on Friday will not BATAN because I should know on Thursday when after work Every Friday we have to go to a seminar at the ITB