The Quran emphasises the special sacrifice of the mother to her child. But it teaches us to treat both, mother and father, equally.
46:15 We have enjoined the human to honor his parents. In pain did his mother bear him, and in pain did she give him birth. The carrying of the child and his total dependence on her took thirty months. When he attains maturity and reaches forty years, he should say, "My Sustainer! Enable me to be grateful for the favor You have blessed me and my parents with, and that I may do works that meet Your approval. And let me train my children to be righteous as well. To You I turn, for I am of those who submit to You." [2:233, 7:189, 17:23-24, 31:13-15. Parents, because the father remained committed to the child and gave the mother full support in rearing]
17:23 (A benevolent society begins at home.) Your Sustainer has decreed that you serve none but Him, and always be kind to your parents. If one of them or both attain old age, do not utter the slightest harsh word to them. Never repel them and always address them respectfully. [2:233, 7:189, 17:23-24, 31:13-15, 36:68, 46:15]
Mother's Day and Father's Day should be equally important in our lives.