+**Republic Day** is a [national holiday](/wiki/national_holiday) celebrated in many countries to mark the date when they became a republic or adopted their [constitution](/wiki/constitution). It signifies a nation's full sovereignty and often involves ceremonial parades and cultural festivities.
+## See also
+- [Independence Day](/wiki/independence_day)
+- [National Day](/wiki/national_day)
+- [Public Holiday](/wiki/public_holiday)
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