Divine or bright valley
Dayonna is a modern American creation, likely formed by combining the prefix 'Da-' with the name Donna or Yonna. It is often interpreted as a blend of the Latin 'diva' meaning divine and the English 'day', or as a variation of Deanna, which means valley or divine.
Less common today
Dayonna isn't in the latest US Top 1000. It last peaked at #3,329 in 2003.
US births per 5-year period, 1990βpresent (SSA data).