The last week of April to the first week of May, commonly referred to as "Golden Week", is a group of several holidays lined up back to back to give people some time off during Spring (though not the entire week, many Japanese people take time off if their job allows during this time. If you plan to travel in Japan, be prepared for large crowds).
The individual holidays are:
April 29 (April 30, 2018 observed), Showa Day
(昭和の日 － しょうわのひ)
The birthday of the previous Japanese emperor, Emperor Hirohito, who reigned from 1926-1989. During his life, it was celebrated as the Emperors Birthday, and after his death it was changed Greenery day at first, and then in 2007 to Showa Day.
May 3, Constitution Memorial Day:
(憲法記念日 － けんぽうきねんび）
The current Japanese constitution was set as law on May 3rd, 1947. Though there isn't a specific way people celebrate this day, newspapers will often run pieces about the Constitution, especially the controversial and increasingly discussed Article 9 added due to World War II, which renounces war and maintains that Japan will not have an army.
May 4, Greenery Day
(みどりの日 ー みどりのひ)
Japanese law says that if there is a day between two holidays, it is also a day off of work, so this day originally started as simply a day off between Constitution Memorial Day and Children's Day. It wasn't until 2007 when this day was named Greenery Day to celebrate nature.
May 5, Children Day:
(こどもの日 － こどものひ）
The holiday began in 1948, though up until recently it was celebrated as Boys Day (With Girls Day celebrated on March 3rd). The holiday is a celebration of children's happiness. You will likely see many carp streamers (鯉のぼりーこいのぼり）hung. Traditionally a black carp represents the father, a red carp represents the mother, and with a carp for each of the children in a family.
Gifu AJET Wagashi Cooking Class
Learn how to make Japanese traditional sweets (wagashi)
When: Saturday, May 12th
RSVP by May 9th
Where: Gifu city
For more details check out the Facebook event (if you do not have a facebook, feel free to e-mail firstname.lastname@example.org and we will pass on all the information):