How should I answer correctly? it's 00.30 a.m How should I answer question " What time is it now in your city?" If it's 00.30 a.m.? -----------------it's half to 1 am------------------ Is It Right or not?

What's difference between words "tell" and "say"? What is the meaning difference between these words? Should I use "I told him that..." or "I said him that..." ? Thank you in advance