Last Updated
：2026/01/06
太陽日
Hiragana
たいようにち
Noun
Japanese Meaning
天体「太陽」と、日付や一日の長さなどを意味する「日」から成る語で、主に天文学・暦学の文脈で用いられる。 / 天文学において、太陽が天球上の同じ子午線を連続して通過するまでの時間間隔。平均すると24時間であり、「太陽日」あるいは「平均太陽日」と呼ばれる。 / 恒星日と対比される概念で、地球の自転と公転の両方の影響を受けて定義される一日の長さ。
Easy Japanese Meaning
地球が一回まわって、昼と夜が一つぶんすぎるまでの時間の長さ
Chinese (Simplified) Meaning
从一个太阳正午到下一个太阳正午的时间，约24小时 / 地球相对于太阳的自转周期，平均为24小时
Chinese (Traditional) Meaning
地球相對太陽自轉一周的時間，約24小時。 / 以太陽視運動定義的一日，指兩次正午之間的時間。
Korean Meaning
태양의 관측을 기준으로 한 하루 / 태양이 자오선을 연속으로 통과하는 사이의 시간(약 24시간)
Vietnamese Meaning
ngày Mặt Trời; khoảng thời gian giữa hai lần Mặt Trời qua kinh tuyến địa phương, xấp xỉ 24 giờ / đơn vị thời gian thiên văn tương ứng một chu kỳ từ trưa đến trưa kế tiếp
Tagalog Meaning
haba ng oras sa pagitan ng dalawang magkasunod na lokal na tanghali batay sa Araw, humigit-kumulang 24 oras / isang araw na sinusukat ayon sa posisyon ng Araw sa langit (astronomiya)
Sense（1）
(astronomy) solar day
（ canonical ）
（ romanization ）
（ romanization ）
（ hiragana historical ）
（ hiragana ）
Quizzes for review
See correct answer
太陽日
See correct answer
A solar day is the time it takes for the Earth to orbit around the Sun.
A solar day is the time it takes for the Earth to orbit around the Sun.
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太陽日は地球が太陽を中心に一周するのにかかる時間です。
Japanese - English
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