Ask user to input UTC timedifference

1. How to force date to UTC in JavaScript?
2. How to get user timezone offset in JavaScript?
3. How to get user timezone in JavaScript?
4. Why use UTC time on servers?

How to force date to UTC in JavaScript?

The Javascript date can be converted to UTC by using functions present in Javascript Date object. The toUTCString() method is used to convert a Date object into a string, according to universal time. The toGMTString() returns a string which represents the Date based on the GMT (UT) time zone.

How to get user timezone offset in JavaScript?

The JavaScript getTimezoneOffset() method is used to find the timezone offset. It returns the timezone difference in minutes, between the UTC and the current local time. If the returned value is positive, local timezone is behind the UTC and if it is negative, the local timezone if ahead of UTC.

How to get user timezone in JavaScript?

To get the timezone, use the getTimezoneOffset() in JavaScript. This method returns the time difference between UTC time and local time. The difference returned is in minutes.

Why use UTC time on servers?

Why UTC? Because it's Coordinated Universal Time. Universal means it's a standard understood anywhere. This way you can reuse your code anywhere and move safely your hosting from a country to an other.