RTC module of raspberry pi 3

[monapi]

hello
my question is raspberry pi 3 doesnt have a RTC module by it self or it has an RTC module but because it's time is not accurate we add an external RTC module to it.
i have a python server code and i want to synch it at a time with client and i run these codes on raspberry pi, so i want to know if i should first add a RTC module to raspberry pi or with the RTC of the raspberry pi's processor i can use RTC in my code?

thank you.

[scotty101]

The raspberry pi does not have a Real Time Clock. You need to add an external one.

The time kept by the Pi is managed in software only.