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本文就中学地理教学中时区的划分和区时的计算谈两种方法。 1 时区序数的判断——中央经线法 通常,根据一个地方的经度,可以计算这一地方所在的时区序数,其公式为: 时区序数=(经度+7.5°)/15°
This paper discusses two methods for the division of time zones and the calculation of the time zone in the teaching of middle school geography. 1 Judgment of Time Zone Ordinal Numbers—Central Warp Method Generally, according to the longitude of a place, the time zone ordinal of the place can be calculated. The formula is: Time zone number = (Longitude +7.5°)/15°