【题目】中国和日本都有中秋节，这时，人们会赏月。 (when)

【答案】China and Japan have mid-autumn festivals when people admire the moon
【解析】根据句意可知本句的时态为一般现在时，when引导定语从句，因此答案：China and Japan have mid-autumn festivals when people admire the moon。