Fact 1:

The integer value representing the month in JavaScript begins with 0 for January and goes up to 11 for December. For example:

Today’s date can be represented as:

> var date = new Date(2016, 3, 29, 11, 10, 30)

instead of:

> var date = new Date(2016, 4, 29, 11, 10, 30)

Fact 2:

In JavaScript, the date is based on a time value expressed in milliseconds, whereas the UNIX timestamp is expressed in seconds since 00:00:00 UTC on January 1, 1970.

For example, to convert a UNIX timestamp to a JavaScript date:

> var date = new Date(UNIX_Timestamp * 1000);