The Shortest Day of 2025

We have just had the shortest day of the year in Japan. It was Sunday, December 21, and there were less than 10 hours of daylight in Nagoya. Of course, the length of the day depends on where you are. Wakkanai in Hokkaido had about 8 hours and 40 minutes of daylight, and Ishigakijima had 10 hours and 40 minutes of daylight. Have you ever wondered why this day isn’t the coldest day of the year? That’s because more than 70% of the earth is covered in water, and water takes longer to get cold than air. Usually, the coldest time of the year in Japan is the end of January.   (111 hours)


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