Date and time tasks don't make sense (if not in UTC)

还没有人认领这个 Issue。

Maybe there's an error in my logic.
But all the tasks & solutions in [*Date and time*](https://javascript.info/date#tasks) don't really make sense if you aren't coincidentally living in UTC+0, right?

My Win 10 always displays dates with 1 hour delay (because I'm in central European summer time UTC+1):
`console.log(new Date(2012,2,1)) ` doesn't display 1st of March but `2012-02-29T23:00:00.000Z`

Shouldn't the tasks explicitly work with UTC time zone & the respective methods, in order to make results inclusive?

从 issue 中链接的日期和时间任务部分开始，检查每个任务对于本地时间、UTC 以及所使用的 Date 方法的假设。在非 UTC 时区中复现这些示例，然后更新任务的文字或示例，使预期的时区明确，并且所述结果保持一致。

由索引模型根据 Issue 内容生成。