Time stamps, time zone offset, clean converter

time.js

'use strict';

class Time
{
	constructor( tz )
	{
		this.tz       = tz;
		this.tzOffset = 3600000 * this.tz || 0;
		this.days     = [ 'Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday' ];
		this.months   = [ 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December' ];
		this.now      = () => Date.now() + this.tzOffset;
	}

	getNow()
	{
		this.time = this.now();
		return this.time;
	}

	getTimeStamp( t )
	{
		return new Date( t );
	}

	zeroOffset( n )
	{
		return ( n < 10 ? '0' : '' ) + n;
	}

	getDate( t )
	{
		t = this.getTimeStamp( t );

		const
			mo        = t.getMonth() + 1,
			monthName = this.months[ mo - 1 ],
			d         = t.getDate(),
			h         = t.getHours(),
			m         = t.getMinutes(),
			s         = t.getSeconds(),
			ms        = t.getMilliseconds();

		return {
			year: t.getFullYear(),
			month: this.zeroOffset( mo ),
			monthName,
			day: this.zeroOffset( d ),
			dayName: this.days[ t.getDay() ],
			hour: this.zeroOffset( h ),
			minute: this.zeroOffset( m ),
			second: this.zeroOffset( s ),
			ms
		};
	}

	timeSince1970( t )
	{ // Not a correct equation
		return ( t / 1000 ) / 60 / 60 / 24 / 7 / 52;
	}
}


let t = new Time( 0 );
console.log( t );

console.log( t.getTimeStamp( t.now() ) );
console.log( t.getDate( t.now() ) );