July 25
Why this day? Jack is a short form of Giacomo, and shares its name day.
Jack is celebrated in France, the United States, Spain, Brazil, Argentina and Germany on June 24; Italy on July 25.
Jack is a short form of Giacomo. It keeps its origin (Hebrew, from Ya'aqov, via Latin Iacobus/Iacomus) and meaning — may God protect; "he who holds the heel", and shares its name day, July 25.
On birth records, Jack is rarely written as such: the Jacks are Giacomos (48,893 births). For the name's history, year-by-year popularity and famous bearers, read the Giacomo page. Jack is also a short form of John, Jacob.
Jack is a short form of Giacomo, which means may God protect; "he who holds the heel".
July 25, together with Giacomo: 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 Giacomo.
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