It is 22 Bahman 1386 coincide with February 11, 2008 with marks the 29th anniversary of the Islamic Revolution of Iran.

This day brings remembrance of the fact that the will of a nation can change the course of history, of a time when one nation stood up for its rights and would not be intimidated into accepting tyranny of Shah any longer.

en.wikipedia.org/wiki/Timeline_of_the_Iranian_Islamic_rev...

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