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日期分界线包括两条吗哪两条
更新时间: 2020-09-15 00:00:00  

1、自然界线,即0点所在的经线,它是不断变化的,自西向东过0点,所在经线日期要加一天,自东向西要减一天;

2、人为界线,即国际上规定,原则上以180度经线为国际日期变更线,简称日界线。自西向东过日界线要减一天,自东向西要加一天。

关键词: 日期 分界线 包括

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