Different LCD for "Digital Clock with Alarm Using DS1307"

Can you help in writing a code for the master and slave MC.

Please tell me.. DS1307 is better or PCF8563 is better?

its all your choice.. PCF8563 has more functions than DS1307... I am not sure about the cost. check both datasheets and use the one suits your requirement.

[Topic moved to Project Addition or Changes Forum]

Can you help in writing a code for the master and slave MC.

kanth_sourabh

I will give advice if I can, but not write chunks of code.

Please tell me.. DS1307 is better or PCF8563 is better?

kanth_sourabh

You can use either for what you are doing,
or neither, if you track the time using the internal timers.

Thank you soo much for all your support. I have decided that to make 5 time zone clock with single source, I will use single RTC (PCF8563) and a single microcontroller. Will attach 5 different clocks with the single microcontroller, will make one clock as master clock. Will add/sub the 'time difference' w.r.t. the master clock and will get it displayed in the rest of the clocks accordingly.
Now i'll only have to write a suitable code the microcontroller so that the entire setup works properly.
Will let you all know know whether it works or not.

best way to deal with time is to use linux timestamp method so it becomes easy to add/subtract time according to selected timezone. You can take reference from Minix source code for time related functions.

set your base clock/RTC to UTC time and then as per user request convert timezone afterwards based on UTC time.