这只是一个不同的时区格式 由 Zoneinfo 数据库 提供:

This is just a different timezone format provided by the Zoneinfo database:

数据库中的时区是给定统一的名称，例如America/New_York"，试图让他们更容易理解人类并消除歧义.

The time zones in the database are given uniform names, such as "America/New_York", in an attempt to make them easier to understand by humans and to remove ambiguity.