// map() reference https://p5js.org/reference/#/p5/map

​

let minHour = 0; 

let maxHour = 24; //max hours in a day

let minMinute = 0;

let maxMinute = 1440; //max minutes in a day

​

function setup() {

  createCanvas(400, 400);

  textSize(60);

}

​

function draw() {

  background(0);

  let currentHour = hour();

  let hourToMinute = map(currentHour, minHour, maxHour, minMinute, maxMinute);

  fill(255);

  text("I've used map() to turn "+currentHour + " hours into " + hourToMinute + " minutes", 20, 60, width, height);

}