noun
sunlight exposure; sunny spot
Refers to how much sun a place gets, or a place that gets good sun. Common in real estate and gardening contexts.
この部屋は日当たりがいい。
This room gets plenty of sunlight.
日当たりの良い場所に植えてください。
Please plant it in a sunny spot.
noun
per day
Only when written 日当たり / 日当り
Used only with the kanji 日当たり or 日当り to mean 'per day', as in daily rates or allowances. Not related to sunlight.
日当たり1万円のアルバイト。
A part-time job paying 10,000 yen per day.
交通費は日当たり500円です。
Transportation expenses are 500 yen per day.