hello again.. i have done actual hardware experiment about the accuracy of these values and i come up results.
this value below is not realy accurate 1 second delay. i compared it to a real digital clock it will be late for 20secs after 48hours..
TH1=0x3C;
TL1=0xB0;
i think this one would be better but its under observation 
TH1=0x3C;
TL1=0xBB;
its beter to use RTC… less hassle .. hihi