Asian History Month, also known as Asian American and Pacific Islander Heritage Month, is observed annually in the United States during the month of May. May was chosen to honor two significant historical dates:
- The arrival of the first Japanese immigrant to the United States on May 7, 1843.
- The completion of the transcontinental railroad on May 10, 1869, which was built primarily by Chinese immigrant workers.
Originally designated as Asian-Pacific Heritage Week in 1978 by President Jimmy Carter, it was later extended to a month-long celebration in May by President George H.W. Bush in 1990 and permanently established in 1992. The month celebrates the history, culture, achievements, and contributions of Asian Americans, Native Hawaiians, and Pacific Islanders in the United States.
Additionally, it is worth noting that South Asian Heritage Month, which specifically celebrates South Asian cultures and histories, runs from July 18 to August 17 each year, but this is distinct from the broader Asian American and Pacific Islander Heritage Month in May.