Of the sea; tower
Maday is a rare name with multiple potential roots. It is often considered a Spanish diminutive or variant related to Magdalena, meaning 'of Magdala' or 'tower', but it also has usage in Latin American cultures as a modern creation possibly linked to the word 'mar' meaning sea.
Less common today
Maday isn't in the latest US Top 1000. It last peaked at #7,440 in 2016.
US births per 5-year period, 1990βpresent (SSA data).