How to Say ‘Since last night.’ in Japanese
きのうのよるからです。
kinou no yoru kara desu
[kee-noh noh yoh-roo kah-rah dess]
💬 Usage Tip: [〜からです] is a polite, complete answer to [いつから]. You can swap in any time phrase.
🇯🇵 In Japan: Polite full answers like this fit the customer-service vibe, but short answers are also acceptable.
Phrase Breakdown
きのう
kinou
[kee-noh]
yesterday
Gives a clear time reference when answering いつから. Common in medical conversations.
きのうのよるからです。
Since last night.
の
no
[noh]
of; ’s
Connects きのう and よる to specify “last night.”
きのうのよるからです。
Since last night.
よる
yoru
[yoh-roo]
night; evening
Part of the answer indicating when it started: last night.
きのうのよるからです。
Since last night.
から
kara
[kah-rah]
from; since
Marks the starting point of the symptom in time.
きのうのよるからです。
Since last night.
です
desu
[dess]
is (polite)
Polite ending to complete the answer: “It’s since last night.”
きのうのよるからです。
Since last night.
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