How to Say "Blood Moon" in Japanese

ブラッドムーン

buraddo mūn

The English phrase "blood moon" is translated into Japanese as ブラッドムーン (buraddo mūn).

ブラッドムーン refers to the moon as it appears during a total lunar eclipse.

Meaning: moon as it appears during a total lunar eclipse (noun)

Which one should you use?

ブラッドムーン is a loanword used in pop culture, whereas 皆既月食 is the standard term for a total lunar eclipse.

buraddo mūn

In Japanese pop culture, the term ブラッドムーン is frequently used in anime and gaming to signal a supernatural event or a change in a character's power, rather than just an astronomical event.
Japanese has a specific word 月見 meaning 'moon viewing', and while a ‘blood moon’ is a spectacle, traditional moon viewing focuses on the clear, bright harvest moon of autumn.
Japanese speakers might use the word 赤月 (akatsuki/sekigetsu) in literary contexts to describe a red moon, which feels much more ancient and poetic than the modern ブラッドムーン.

ブラッドムーンがすごく綺麗だったよ！
The blood moon was so beautiful!
今夜はブラッドムーンが見られるよ。
Konya wa buraddomūn ga mirareru yo.
You can see a blood moon tonight.
ブラッドムーンはとても赤かった。
Buraddomūn wa totemo akakatta.
The blood moon was very red.
ブラッドムーンの写真を撮りたいです。
Buraddomūn no shashin o toritai desu.
I want to take a photo of the blood moon.

Hina and Ren are looking at the night sky together.

陽葵 Himari

見て！きれいなブラッドムーンだよ。
Mite! Kireina buraddomūn dayo.
Look! It's a beautiful blood moon.
蓮 Ren

本当に赤いね。すごいなあ。
Hontō ni akai ne. Sugoi nā.
It really is red. That's amazing.
陽葵 Himari

めずらしい現象だよね。
Mezurashii genshō dayone.
It's a rare phenomenon, isn't it?
蓮 Ren

うん。ずっと見ていたいよ。
Un. Zutto mite itai yo.
Yeah. I want to keep watching it.

Sources

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