Ok let me kill the thread.

1.If the safcom line has the tried to call you service.
Switch  off the safcm try calling it using the yu line, switch it on again receive sms,  use the sms time stamp to know the time.

2.If the safcm line doesnt have the tried to call you service divert all its call to 0722199199 then use the yu line to call the safcm you will get the sms"tried to call you" use the sms time stamp.
Dont forget to remove the divert later.

3.@Davids answer is also right "send blank msg to 144 (safcm)" use sms time stamp

@Wash .

Set your phones time zone to UTC+3 (it's called UTC these days, not GMT) thanks for the heads up. and then configure the phones for automatic time update, reboot them. They will automatically update the time and it requires no credit at all.  How can this be done using a kabambe?? pls enlighted me