When are New Year's Day, April Fool's Day, Arbor Day, Army Day, and Mid-Autumn Festival?

New Year’s Day is January 1st, April Fool’s Day is April 1st, Arbor Day is March 12th, Army Day is August 1st, and Mid-Autumn Festival is August 15th in the lunar calendar.

April Fool's Day, also known as April Fool's Day, is a traditional Western folk festival every year. There are different opinions on its origin: one theory is that this custom originated from the "Quansi Festival" in India. This festival stipulates that on March 31 every year, lovers fool and deceive each other for entertainment. The more common theory is that it originated in France.

In 1564, France first adopted the new reformed calendar system - the Gregorian calendar (the universal Gregorian calendar), with January 1st as the beginning of the year, changing the past of using April 1st as the beginning of the year. Calendar for the beginning of the new year. During the implementation of the new calendar, some conservative people opposed this reform and still followed the old calendar and refused to update it.

They still give each other gifts on April 1st and organize activities to celebrate the New Year. Those who advocated reform ridiculed the practices of these conservatives. Smart and funny people give fake gifts to diehards on April 1st, invite them to fake celebrations, and call these fooled people "April fools" or "bait fishes." From then on, they fooled each other on this day, and it became a popular custom in France over time. The festival spread to England in the 18th century and was later brought to the United States by early British immigrants.