Emphasizes the immediate present moment, often used when something is happening or has just happened at this very instant.
I just arrived home right now.
The meeting is starting right now.
たった今 also means 'just now' but often implies a very recent past action, while ちょうど今 can refer to the immediate present or a just-completed action.
Standard mixed kanji-kana spelling.
Full kanji spelling; less common than the mixed form.
Compound of ちょうど (exactly) and 今 (now).