taru-adjective, adverb taking the 'to' particle
long and balmy spring day
A literary yojijukugo describing a calm, warm, and seemingly endless spring day. Often used in poetic or classical contexts.
春日遅々として、野山の花が咲き乱れている。
On a long, balmy spring day, the flowers in the fields and hills are in full bloom.
彼は春日遅々たる午後を、縁側でうたた寝して過ごした。
He spent the long, balmy spring afternoon dozing on the veranda.
A yojijukugo of classical Chinese origin, combining 春日 (spring day) and 遅々 (slow, lingering). The exact historical derivation is uncertain, but the phrase evokes the leisurely passage of a warm spring day.