Q. It is said that Monday is an auspicious day and hence a Nikah should take place either Sunday after Maghrib or on the Monday – Is this true?
A. There are no specific Nikah dates or days during the year. A Nikah date or day should be set in accordance to convenience.
However, it is Mustahab to marry on a Friday. (Majmaul Anhur)
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa
themufti.com