Meanings
nounsolar day (plural solar days)
plural solar days
- astronomyOne day of solar time; the time in which a planet such as Earth apparently rotates once around its axis relative to the Sun; the time taken for the Sun to seem to be in the same place in the sky twice (on Earth about 24 hours as an average - the length of solar day is not constant throughout the year)
Synonyms & antonyms
nountime for Earth to make a complete rotation on its axis
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Synonym sets from Open English WordNet, CC BY 4.0.
Translations
Bengali আফতাবী রোজ
- আফতাবী রোজ (aftabī roz)time for a planet to rotate once relative to the sun
Chinese Mandarin 太陽日 /太阳日
- 太陽日 /太阳日 (tàiyángrì)time for a planet to rotate once relative to the sun
Dutch zonnedag
- zonnedagtime for a planet to rotate once relative to the sun
Finnish aurinkovuorokausi
- aurinkovuorokausitime for a planet to rotate once relative to the sun
French jour solaire
- jour solairetime for a planet to rotate once relative to the sun
German Sonnentag, Solartag
- Sonnentagtime for a planet to rotate once relative to the sun
- Solartagtime for a planet to rotate once relative to the sun
Japanese 太陽日
- 太陽日 (taiyōjitsu)time for a planet to rotate once relative to the sun
Russian со́лнечные су́тки
- со́лнечные су́тки (sólnečnyje sútki)time for a planet to rotate once relative to the sun
Spanish día solar
- día solartime for a planet to rotate once relative to the sun
Swedish soldygn
- soldygntime for a planet to rotate once relative to the sun
Cite this entry
APA
solar day. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/solar%20day
MLA
“solar day.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/solar%20day. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “solar day,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/solar%20day.
Source: solar day on Wiktionary, CC BY-SA 4.0.