From delay() to millis()

Using Arduino Programming Questions
1

Hello this program ir is working perfectly fine but i want to improve it .

-The first thing is i need to make the stepper turn one time every 5minute but i need the program to continue to turn when the stepper is moving with millis() .

-Secondly i don't want the stepper to turn all day long but only when i press a button like imagine the watch is in position 0pm and i press 1:05h latter the button the watch had to go on position 1:05pm direclty .

The problem , i have to idea how to do it .
So if you have links to learn something helpful for my project thx.

#include <Stepper.h>
int i;
const int stepsPerRevolution = 20;  // change this to fit the number of steps per revolution
// for your motor


Stepper myStepper1(stepsPerRevolution, 2, 3, 4, 5);
Stepper myStepper2(stepsPerRevolution, 10, 11, 12, 13);

void setup() {
  
  // set the speed at 60 rpm:
  myStepper1.setSpeed(60);
myStepper2.setSpeed(60);
  // initialize the serial port:
  Serial.begin(9600);
} 

   void loop() {
    
for(i = 0; i<12 ; i++ ) {
  myStepper2.step(stepsPerRevolution); // 05min
delay (300000);
  }
  
  for(i = 13; i<14 ; i++ ) {
  myStepper1.step(stepsPerRevolution); //1h
delay (3600000);
  }
    
    }
2

Being in the same learning boat in a way, I'd happily recommend

https://forum.arduino.cc/index.php?topic=503368.0

as well as...

http://forum.arduino.cc/index.php?topic=223286.0

So far, I am finding both of these guides super helpful.

Robin's planning guide is extremely insightful as well.

http://forum.arduino.cc/index.php?topic=261445.0

3

like imagine the watch is in position 0pm and i press 1:05h latter the button the watch had to go on position 1:05pm direclty

I'm having a really hard time imaging a watch, or clock, as the project, when the steppers are called mySteppe1 and myStepper2.

Now, if the steppers were called hourStepper and minuteStepper, THEN, imaging a clock would be so much easier.

  for(i = 13; i<14 ; i++ ) {
  myStepper1.step(stepsPerRevolution); //1h
delay (3600000);
  }

Where is the value in using a for loop that will iterate exactly once?

const int stepsPerRevolution = 20;  // change this to fit the number of steps per revolution
// for your motor

Please post a link to the 20 steps per revolution motor you are using. I seriously doubt that that is the correct number of steps per revolution.