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[What day is it today? | Tohoku Edition] What day is March 13th?
The day the Seikan Tunnel opened
On March 13, 1988 (Showa 63) , the Seikan Tunnel opened to traffic along with the opening of the Kaikyo Line ( a JR Hokkaido railway line connecting Nakakuni Station in Sotogahama Town , Aomori Prefecture , to Kikonai Station in Kikonai Town, Hokkaido). The Yoshioka Undersea Station and Tappi Undersea Station , located under the Tsugaru Strait, also opened at the same time. (Yoshioka Undersea Station and Tappi Undersea Station were closed in 2014.)

The Seikan Tunnel (also known as the Seikan Tunnel) is a 53.85 km long railway tunnel that connects Imabetsu Town, Higashitsugaru District, Aomori Prefecture on Honshu with Shiriuchi Town, Kamiiso District, Hokkaido, and was the longest undersea tunnel in the world at the time
reference
- Wikipedia:Seikan Tunnel
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