let minuteR = 100;

let hourR = 70;

​

function setup() {

  createCanvas(400, 400);

  frameRate(1);

  angleMode(DEGREES);

}

​

function draw() {

  background(0);

  translate(200, 200);

  let h = hour();

  let m = minute();

  let s = second();

  let sAngle = map(s, 0, 60, 0, 360) - 90;

  let secondPoint = {

    x: secondR * cos(sAngle),

    y: secondR * sin(sAngle)

  };

  stroke(255);

  strokeWeight(3);

  line(0, 0, secondPoint.x, secondPoint.y);

}