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读了《江苏教育》中学版一九七九年第六期上发表的胡学文同志的《时区和日界线》一文后,觉得这篇文章对时区和日界线的知识介绍比较细致,对初学地理的同志有一定的帮助。这里我们想补充几点不成熟的意见。一、关于时区序号的计算问题。胡学文同志在文章中提出了“某地时区序号=(某地经度-7.5)÷15”的计算式,根据他所举的例题看来,取其商时,小数部分不论是0.999还是0.001均需进一,才能与实地时区序号相等。我们觉得这种方法不但烦
After reading the article entitled Time Zone and Japanese Boundary Line published by the Second High School of Jiangsu Education in the sixth edition of 1979, I feel that this article introduces the knowledge of the time zone and the Japanese boundary more meticulously. Comrades have some help. Here we want to add a few immature opinions. First, on the calculation of time zone number. In his article, Comrade Hu Xuewen put forward the formula for calculating the time series number of a certain place = (longitude -7.5) ÷ 15 "of a certain place. According to the example given by him, when taking his quotient, the fractional part needs to enter into both 0.999 and 0.001 First, to be equal to the time zone number. We think this method is not only annoying