Upload the code to the board using the ATmega328P (Old Bootloader) (for boards bought from third party manufacturers) and configuring the time from the RTC module beforehand (little code snippet inside the main file).
Upload the code to the board using the ATmega328P (Old Bootloader) (for boards bought from third party manufacturers) and configuring the time from the RTC module beforehand (little code snippet inside the main file).