General knowledge quiz time! From trivia to questions about Japan and the world

air conditioner

Aircon is an abbreviation of “air conditioning.” “Air” means air, and “conditioning” means adjustment. It refers to a device that creates a comfortable indoor environment by controlling the temperature, humidity, and cleanliness of the air.

29th

A leap year occurs every four years and has one more day than a regular year. That’s why February in a leap year has 29 days. This adjusts the discrepancy between Earth’s orbital period and the calendar.

eight

There are eight in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you answered nine, you probably remember when Pluto used to be counted among them. Pluto is now classified as a dwarf planet. By the way, the closest to the Sun is Mercury, and the farthest is Neptune.

from the outside

In Western dining etiquette, you generally use knives and forks from the outside in. This arrangement helps you naturally choose the appropriate cutlery as you progress from the appetizer to the main course.

Pluto

In 2006, at the General Assembly of the International Astronomical Union, a definition for planets—previously unclear—was established, and Pluto, which had been considered the ninth planet of the solar system, was reclassified as one of the newly defined dwarf planets. As a result, the number of planets in the solar system became eight.

three times

In general, knocking three times before entering is considered polite. Knocking twice is most often used to check whether a restroom is occupied.

Coming of Age Day

Coming of Age Day is a day in Japan to celebrate new adults. It is observed on the second Monday of January every year.