晴夜 is read as せいや (seiya) and means clear night.
せいや
seiya
せいでん
fine weather (i.e. little or no clouds)
はれ
cleared of suspicion
はれる
to be cleared (e.g. of a suspicion)
はらす
to accomplish a goal
はれま
patch of blue sky
はれぎ
(one's) Sunday best
はれやかなえがお
beaming smile
はればれ
bright
はれいちじこさめ
clear, with brief light rain
せいてんはくじつ
clear weather
はれのひ
formal occasion