Y-Day

proper noun

1 March 1946, the planned date for the Allied invasion of the Kantō Plain to conquer Tokyo in World War II (cancelled following Japan's unconditional surrender in September 1945).

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Meanings

proper noun
  1. historical1 March 1946, the planned date for the Allied invasion of the Kantō Plain to conquer Tokyo in World War II (cancelled following Japan's unconditional surrender in September 1945).
Cite this entry
APA

Y-Day. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Y-Day

MLA

“Y-Day.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Y-Day. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “Y-Day,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Y-Day.

Source: Y-Day on Wiktionary, CC BY-SA 4.0.