Firebase.ServerValue.TIMESTAMP的时区 [英] Time zone for Firebase.ServerValue.TIMESTAMP

问题描述

看来，当我使用 Firebase.ServerValue.TIMESTAMP 目前，它正在使用PDT（我认为将在秋季改为PST）。

有没有办法以UTC取代PDT？

自时代（1970年1月1日午夜UTC）开始，Firebase时间戳总是以毫秒为单位存储。日期在JavaScript和许多其他语言中工作的方式也是如此。这是一个表示时间的时区不可知的方式。一般来说，时区只在时间如何显示给用户时发挥作用，而不是在如何表示-THE罩。因此，如果您使用由Firebase.ServerValue.TIMESTAMP创建的时间戳记构造JS日期对象，它将自动具有与该时间戳相同的时区。因此，Firebase时间戳也不例外。机器正在显示。

It appears that when I use Firebase.ServerValue.TIMESTAMP currently, it is using PDT (I assume that will be changing to PST in the fall).

Is there a way to get this in UTC instead of PDT?

解决方案

Firebase timestamps are always stored as milliseconds since the epoch (midnight of 1/1/1970 in UTC). This is the same way that dates work in Javascript and many other languages. This is a timezone-agnostic way of representing time.

Generally speaking, timezone only plays a role in how a time is displayed to a user, not in how it's represented under-the-hood. Firebase timestamps are no different.

So, if you construct a JS date object using a timestamp created by Firebase.ServerValue.TIMESTAMP, it will automatically have the same timezone as the machine on which it is being displayed.

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