Tanabata (七夕 tanabata, たなばた) or The Star Festivals, meaning "Evening of the seventh") is a Japanese star festival, derived from the Chinese star festival, Qi Xi (七夕 "The Night of Sevens")．Every year Japanese people celebrate this festival on July, 7.
It celebrates the meeting of Orihime (Vega) and Hikoboshi (Altair). The Milky Way, a river made from stars that crosses the sky, separates these lovers, and they are allowed to meet only once a year on the seventh day of the seventh lunar month of the lunisolar calendar. Since the stars come out at night, the celebration is held at night.
History
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The festival originated from The Festival to Plead for Skills (乞巧節; qǐ qiǎo jié, or 乞巧奠; きっこうでん), an alternative name for Qi Xi, which was celebrated in China and also was adopted in the Kyoto Imperial Palace from the Heian Period. The festival spread to the general public by the early Edo period, became mixed with various Obon or Bon (盆）traditions (because the Bon was held on 15th of the seventh month then), and developed into the modern Tanabata festival. In the Edo period, girls wished for better sewing and craftsmanship, and boys wished for better handwriting by writing wishes on strips of paper. At this time, the custom was to use dew left on taro leaves to create the ink used to write wishes. Incidentally, the Bon is now held on the 15th of August on the solar calendar, close to its original date on the lunar calendar, making Tanabata and Bon as further separate events.
The name Tanabata is remotely related to the Japanese reading of the Chinese letters 七夕, which used to be read as "Shichiseki" (しちせき). It is believed that a Shinto purification ceremony existed around the same time, in which a Shinto miko weaved a special cloth on a special weaver called Tanabata 棚機 (たなばた) near waters and offered it to a god to pray for protection of rice crops from rain or storm and for good harvest later in autumn. Gradually this ceremony merged with 乞巧奠（きっこうでん, (The Festival to Plead for Skills) and became Tanabata 七夕. Oddly the Chinese writing 七夕 and the Japanese reading Tanabata (たなばた) joined to mean the same festival, although originally they were two different things, an example of ateji.
The Story
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Like Qi Xi and Chilseok, Tanabata was inspired by the famous Chinese folklore, The Princess and the Cowherd.
Orihime (織姫 Weaving Princess) the daughter of the Tentei (天帝 Sky King, or the universe itself) wove beautiful clothes by the bank of the Milky Way (天の川 Amanogawa). Her father loved the cloth that she wove and so she worked very hard every day to weave it. However, she was sad that because of her hard work she could never meet and fall in love with anyone. Concerned about his daughter, Tentei arranged for her to meet Hikoboshi (彦星 Cow Herder Star) sometimes called Kengyuu (牽牛 Chinese name of Hikoboshi) who lived and worked on the other side of the Amanogawa River (Milky Way). When the two met, they fell instantly in love with each other and were shortly married. However, once married, Orihime no longer would weave cloth for Tentei and Hikoboshi allowed his cows to stray all over Heaven. In anger, Tentei separated the two lovers across the Amanogawa River and forbade them to meet. Orihime became despondent at the loss of her husband and asked her father to let them meet again. Tentei was moved by his daughter’s tears and allowed the two to meet on the 7th day of the 7th month if Orihime worked hard and finished her weaving. The first time they tried to meet, however, they found that they could not cross the river because there was no bridge. Orihime cried so much that a flock of magpies came and promised to make a bridge with their wings so that she could cross the river. If it rains, the magpies cannot come and the two lovers must wait till next year.
The following variation of the story is known in China and Japan: A young farmer named Mikeran discovered on his farm a robe which, unbeknownst to him, belonged to a goddess named Tanabata. Soon after, Tanabata visited Mikeran and asked if he had found it. He lied and told the goddess that he hadn't but would help with her search. Eventually the pair fell in love, were wed and had many children. However, one day Tanabata noticed a piece of cloth which had once belonged to her robe on the roof of Mikeran's hut. His lie discovered, Tanabata agreed to forgive him on the condition that he weave a thousand pairs of straw shoes, but until that time, she would leave him. Mikeran was unable to weave the shoes in his lifetime and thus never met Tanabata again. However, it is said that the pair meet once a year when the stars Altair and Vega intersect.
Qi Xi
Sendai Tanabata Festival
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The Sendai Tanabata festival began shortly after the city was founded in the early Edo Period. The Tanabata festival gradually developed and became larger over the years. Although the festival's popularity started to dwindle after the Meiji Restoration, and almost disappeared during the economic depression that occurred after World War I, volunteers in Sendai revived the festival in 1928 and established the tradition of holding the festival from August 6 to August 8.
During World War II it was impossible to hold the festival, and almost no decorations were seen in the city from 1943 to 1945, but after the war, the first major Tanabata festival in Sendai was held in 1946, and featured 52 decorations. In 1947, the Showa Emperor Hirohito visited Sendai and was greeted by 5,000 Tanabata decorations. The festival subsequently developed into one of the three major summer festivals in the Tohoku region and became a major tourist attraction. The festival now includes a fireworks show that is held on August 5.
At the Sendai Tanabata festival, people traditionally use seven different kinds of decorations, which each represent different meanings. The seven decorations and their symbolic meanings are:
 Paper strips (短冊; Tanzaku) : Wishes for good handwriting and studies |  Paper Kimono (紙衣; Kamigoromo) : Wishes for good sewing. Wards off accidents and bad health. |  Paper Crane (折り鶴; Orizuru) : Family safety, health, and long life |  Purse (巾着; Kinchaku) : Good business |
 Net (投網; Toami) : Good fishing and harvests |  Trash Bag (くずかご; Kuzukago) : Cleanliness and unwastefulness |  Streamers (吹き流し; Fukinagashi) : The strings that Orihime uses to weave |
