Vmartz

Hi so I'm starting zerega training and im aware of the probatonary period however I am also in the process for the fdny and have a interview 2 weeks after my start date at Zerega is there any chance that they would let me have off on that day I dont know if it's a good idea to tell them my very first day I'm afraid that if I ask they are going to fire me I olny need about a hour off during the interview and then I can work later that day can someone give me some good advice please since it's another civil service title does that help me in my favor?