Using RTC instead of millis to execute something every second

Projects Programming
2

hddforensic:
Hi,

Because millis is not accurate, I'd like to use RTC instead.

I have a project with an Lcd counter. it increase by One, every
second more or less because millis is not accurate

To execute my counter every second I use the common following line with millis

if(currentMillis - previousMillis > interval) {
do something
}

previousMillis = currentMillis;

Question

now.second() is the variable for second is in it ?

How can use it to replace millis ?

You are most of the way there already.

Instead of using previousMillis, create a variable named previousSecond and use it.
Then you will be able to compare now.second() to previousSecond.

(Hint: the symbol != means "does not equal".)