に当たって[niatatte] at the time of (ind. opportunity or situation where something should be done)
一騎当千[ikkitousen] being a match for a thousand
一指当たり[ichiyubiatari] span
一人当たり[hitoriatari] per person
一人当て[hitoriate] per person

引当[hikiate] mortgage
引当金[hikiatekin] reserves
押し当てる[oshiateru] to push (something) against
穏当[ontou] proper
過当[katou] excessive

御誕生日おめでとうございます[otanjoubiomedetougozaimasu] Happy Birthday
また明日[mataashita] see you tomorrow
旭日[kyokujitsu] rising sun
旭日昇天[kyokujitsushouten] full of vigor and vitality (like the rising sun) (vigour)
或日[aruhi] one day (e.g. "one day while studying, ..")

一日の長[ichijitsunochou] superiority
一日一日[ichinichiichinichi] gradually
一日一夜[ichinichiichiya] all day and night
一日増しに[ichinichimashini] day by day
一日置き[ichinichioki] every other day

陰陽道[onmyoudou] Onmyoudou
紫陽花[ajisai] hydrangea (Hydrangea macrophylla)
斜陽[shayou] setting sun
重陽[chouyou] Chrysanthemum Festival (the 9th day of the 9th lunar month) (one of the five annual festivals)
太陽[taiyou] sun

太陽光線[taiyoukousen] sunlight
太陽光発電[taiyoukouhatsuden] solar power (generation)
太陽暦[taiyoureki] solar calendar
半陰陽[haninyou] hermaphrodite