Coat of Arms of KenyaKenya celebrates it’s most important holiday on the 12th of December each year as the day that, in 1963 they received their independence from Great Britain as well as the day in 1964 they formed their first government.
Flag of Kenya
Through out the country the Kenyans celebrate their culture through feasts, dancing and parades.  One entry I found said the over all theme of all the celebrations is that of unity.  I also found reference to all the events are to remember the heritage of the country and remember where they came from.

Links:
Wiki: http://en.wikipedia.org/wiki/Jamhuri_Day

Additional:
http://www.istc.org/sisp/index.htm?fx=event&event_id=158013
http://www.units.muohio.edu/ath175/student/GRIFFILG/index.html

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