Every day is wife's day.

• قال رسول الله ﷺ : " إنك لن تنفق نفقة إلا أجرت عليها حتى اللقمة ترفعها إلى فم امرأتك " متّفق عليه .
Whatever you spend will be considered a Sadaqa for you, even the mouthful of food you put in the mouth of your wife...Bukhari and Muslim. ....