September 17
Why this day? Sonnie is a short form of Sonja, and shares its name day.
Sonnie is celebrated in the United States on September 17.
Sonnie is a short form of Sonja. It keeps its origin (Greek (via Russian/Scandinavian)) and meaning — wisdom, and shares its name day, September 17.
On birth records, Sonnie is rarely written as such: the Sonnies are Sonjas (39,280 births). For the name's history, year-by-year popularity and famous bearers, read the Sonja page. Sonnie is also a short form of Sondra.
Sonnie is a short form of Sonja, which means wisdom.
September 17, together with Sonja: 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 Sonja.
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