>>>

I have to write customized class for work with astronomical time and make something like timer. Can you help me ?

Maybe

Yes, I could.

Probably

This thread has become too silly to save - closed

To the OP;

To increase the possibility of a decent reply, you should invest more care in asking your question. A little more detail on what OS, what compiler and what you expect to do with it. And please post some code that you attempted so far (just to show that you dont expect everyone to do this for you entirely). Also, dont bother with titles like ">>>" - no one will take you seriously