September 18
Why this day? Riana is a short form of Arianna, and shares its name day.
Riana is celebrated in the United States, Brazil and Germany on November 1; Italy on September 18; Argentina on July 19.
Riana is a short form of Arianna. It keeps its origin (Greek or Etruscan) and meaning — very chaste or very pure, and shares its name day, September 18.
On birth records, Riana is rarely written as such: the Rianas are Ariannas (53,903 births). For the name's history, year-by-year popularity and famous bearers, read the Arianna page.
Riana is a short form of Arianna, which means very chaste or very pure.
September 18, together with Arianna: a short form shares the name day of the name it comes from.
It is a familiar short form. It does not appear as such in birth records, where you find Arianna.
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