Why does Date#getHours() return hour + 1?

问题

This is my code:

var feedDataTimestamp = new Date("2014-01-14T00:04:40+0000").getTime();
var parsedDate = new Date(+feedDataTimestamp);
alert(parsedDate.getHours());

but it should print 0, not 1: time is 00:04:40

回答1:

Because you (according to your Stackoverflow profile) are in Italy, so your time zone is UTC+1.

The time stamp you are inputting is UTC+0.

parsedDate will be in local time.

Use the getUTCHours() method if you want to get UTC time instead of local time.

回答2:

You set the timezone in the parsed string as +0000 so you seem to want the hours in UTC, use

alert(parsedDate.getUTCHours())

来源：https://stackoverflow.com/questions/21134980/why-does-dategethours-return-hour-1