"Americans of Turkish descent in the District of Columbia have played a significant role in the educational, cultural, economic, and civic development of our community," says DC mayor Muriel Bowser.
A Turkish cultural group will be holding a virtual community event to commemorate the day.
Emergency comes as the number of identified coronavirus cases in the US capital reaches 10 and officials recommended gatherings of 1,000 or more people be postponed or canceled.
Freezing cold weather that broke century-old records grips much of the US and leaves at least four dead.
Media reports say another twelve people will face charges over the fight that happened outside the Turkish ambassador's residence during President Erdogan's visit to the United States last month.
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