I have done quite a bit of reading but can't find a definitive statement for expected RTC accuracy. I have seen comments about 1 second/day but then suggestions like external 32KHz xtal are dropped-in as well.
On the ESP8266 I used a virtual timer, running off the system clock to get reasonable accuracy for my application.
If machine.RTC() is relatively poor for the ESP32 is there any point to trying to run a virtual timer off the system clock?
Thanks,
Dave