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30th
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30th Parallel North




The 30th parallel passes through Baja California , the Gulf Of California , and the northern Mexican States of Sonora and Chihuahua . Crossing the Rio Grande , it enters the United States through the southern part of Texas . The southern part of Louisiana barely touches the line, and the city of New Orleans sits directly on it. East of New Orleans the 30th parallel goes over the Gulf of Mexico, with the states of Alabama and Mississippi stopping just short of it. It then passes through the Florida Peninsula and over the North Atlantic Ocean . It crosses North Africa , where it bisects states such as Libya and Egypt . It crosses the Red Sea and the Arabian Peninsula , then heads over the Persian Gulf to Iran , Pakistan , and India . It passes through Southeast Asia and China before heading out over the vast Pacific Ocean .