- 10. JANUARY * Donald Ervin Knuth * 010日目 あと355日 TOKYO_SUNRISE-06:51 SUNSET-16:46 MOON-28.1 DAYS _ Cobalt powers our lives. What is it—and why is it so controversial? https://www.nationalgeographic.com/environment/article/cobalt-mining-congo-batteries-electric-vehicles 110番の日, 明太子の日, 交通安全の日, 十日ゑびす,…