main.js

var express = require('express');
var app = express();

app.use(express.bodyParser()); 

app.get('/is-timer-on', function(req, res) {
  var hours = new Date().getHours() - 8;
  if (hours >= 20 || hours <=7) {
    res.send("false " + hours);
  } else {
    res.send("true " + hours);
  }
});

app.listen();