The flag of East Turkestan (Uyghur: شەرقىي تۈركىستان بايرىقى‎ ), often referred to as the East Turkestan flag and also known as Kökbayraq ("blue banner"), was the national flag of the First East Turkestan Republic. It substituted old flag with blue crescent (young Waxing Moon) on white background and Shahada, adopted on November 12, 1933 during Declaration of the Turkish Islamic Republic of East Turkestan, when Khoja Niyaz came to Kashgar to assume the Presidency of East Turkestan Republic on January 13,1934.[2][failed verification] In modern times it is popularly used as a symbol of the East Turkestan independence movement.[3]