How to determine the time interval on a node?

Question

Node.js

I'm trying to write a greenhouse lighting control in node.js.
I need to turn on the relay in the range from 22:00 to 6:00 and from 6:00 to 22:00 do not turn on the relay. I created two variables

var nightStart = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 22, 00, 00);
var dayStart =   new Date(now.getFullYear(), now.getMonth(), now.getDate(), 06, 00, 00);

And then it took them away from now, but, as it turned out, the code did not work at night and the program still thought that it was daytime.
How else can you determine which interval includes the current time?

Answer 1

if (now < nightStart && now > dayStart){
 //делаем то, что с 6:00 до 22:00
}else{
 //делаем то, что с 22:00 до 6:00
}

Answer 2

Yuzai moment.js is the best library for working with time and dates.