从时区缩写中获取 UTC 偏移量 [英] Get UTC offset from timezone abbreviations

问题描述

无论如何可以从时区缩写中获得 utc 偏移量?如:

Is there anyway to get utc offset from a timezone abbreviations? Such as:

太平洋标准时间"

为了

太平洋标准时间(北美)

Pacific Standard Time (North America)

这将导致 UTC-08.我在时刻时区找到了一种方法，但它没有多大帮助.它提供了一个时区标识符列表，但其中大部分已被弃用.谢谢.

which will result in UTC−08. I found a way on moment-timezone but it did not help much. It provides a list of timezone identifier but most of them are deprecated. Thank you.

推荐答案

这是一个相当棘手的话题，类似的问题已经讨论过了.

This is a quite tricky topic and similar questions have already been discussed.

请参阅使用 JavaScript 检测时区缩写或使用偏移值获取时区缩写

我会提出两个选项:

1.哈希表.根据标准信息(例如时区缩写列表及其偏移量)创建您需要的键值对.类似的东西

1. Hash table. Create a key-value pair of what you require based on standard information (e.g. list of timezone abbreviations and their offset). Something like

    let offsetByAbbrev = {"PST" : "UTC-08", "EST" : "UTC+01", ... }

但这需要认真维护，因为它会很快被弃用.

But this needs serious maintenance as it will get deprecated quickly.

2.日期操作.您可以使用 momentjs 在特定时区创建日期，但不能使用缩写.并且有一个很好的理由:这些缩写可能会改变，也可能导致歧义.你可以查看momentjs-timezone使用的JSON:https://github.com/moment/moment-timezone/blob/develop/data/packed/latest.json 这将使您大致了解它的混乱程度.例如做一个简单的 ctrl+f 搜索 PST 并查看结果.

2. Date manipulation. You can create a date in a specific timezone with momentjs, however, not with abbreviations. And there is a good reason for it: these abbreviations can change and can also cause ambiguity. You can check out the JSON used by momentjs-timezone: https://github.com/moment/moment-timezone/blob/develop/data/packed/latest.json which will give you a general sense of how chaotic it can be. For example do a simple ctrl+f search for PST and see the results.

所以我建议使用时区名称 - 您实际上可以创建和使用 momentjs-timezone.请参阅如何在特定时间创建时间使用 moment.js 的时区，您可以根据时区名称创建一个 moment 对象，该对象将包含(根据 moment 时区的规范:https://momentjs.com/timezone/docs/#/zone-object/) 偏移量本身.

So I would suggest using the timezone names - which you can actually create and use with momentjs-timezone. See How to create time in a specific time zone with moment.js where you can create a moment object based on the timezone name and that object will contain (as per the spec of moment timezone: https://momentjs.com/timezone/docs/#/zone-object/) the offset itself.

我知道这并不能完全解决您的问题，尽管您尝试做的不一定是达到理想解决方案的最佳方法.

I know this does not exactly resolve your problem, though what you are trying to do is not necessarily the best approach to reach your an ideal solution.

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