肯定用户的时区 - Determine a user's timezone

问题：

Is there a standard way for a web server to be able to determine a user's timezone within a web page? Web服务器是否能够经过标准方法肯定网页中用户的时区？

Perhaps from an HTTP header or part of the user-agent string? 也许来自HTTP标头或部分user-agent字符串？

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解决方案：

参考一： https://stackoom.com/question/D/肯定用户的时区
参考二： https://oldbug.net/q/D/Determine-a-user-s-timezone