YOU SAID:

that would while away an hour,

INTO JAPANESE

1時間離れている間、

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While one hour away

INTO JAPANESE

1時間離れている間

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While separated by 1 hour

INTO JAPANESE

1時間間隔をあけながら

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With an hour interval

INTO JAPANESE

1時間間隔で

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At 1 hour intervals

INTO JAPANESE

1時間間隔で

BACK INTO ENGLISH

At 1 hour intervals