Is there any difference between 整日 and 整天
整日 : whole day refers to only day ?
整天 : whole day refers to day & night?
Dictionary Meaning:
整日 zhěngrì all day along, whole day
整天 zhěngtiān whole day
Actually they're the same, they both mean a whole day. However:
整天玩游戏
"playing games all day".