Translation of "sidereal day" into Welsh

diwrnod sêr is the translation of "sidereal day" into Welsh.

sidereal day noun grammar

one day of sidereal time; the time in which Earth rotates once around its axis, relative to the point of the vernal equinox (about 23 hours, 56 minutes, 4 seconds) [..]

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  • diwrnod sêr

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