Each year, Americans observe National Hispanic Heritage Month from September 15 to October 15, by celebrating the histories, cultures, and contributions of American citizens whose ancestors came from Spain, Mexico, the Caribbean, and Central and South America.
The observation started in 1968 as Hispanic Heritage Week under President Lyndon Johnson and was expanded by President Ronald Reagan in 1988 to cover a 30-day period starting on September 15 and ending on October 15. It was enacted into law on August 17, 1988
The day of September 15 is significant because it is the anniversary of independence for Latin American countries Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua. In addition, Mexico and Chile, and Belize celebrate their independence days on September 16, 18, and 21, respectively.
Learn more about it here:
https://www.hispanicheritagemonth.gov/about/
Rosh Hashanah is the Jewish new year. It is a time for rejoicing and of introspection; a time to celebrate the end of another year and to take stock of your life. Rosh Hashanah starts the High Holy Period of the Jewish faith which ends with Yom Kippur, the Day of Atonement. All Jewish holidays start at Sundown the night before the calendar date of the holiday.
For more information: https://www.myjewishlearning.com/article/rosh-hashanah-101/
Native American Day is a public holiday or official state observance only in some states. However, it has been steadily growing in both scope and popularity. Some states celebrate it on the second Monday of October, while others have moved the celebration to different dates. Some states observe a similar celebration called Indigenous People's Day.
Native American Day is an opportunity to celebrate and learn about the traditions, culture, and background of Native Americans. Events vary from one place to another, but they may include pow wows, markets, or exhibitions.
Native Americans are the indigenous peoples of North America. The term encompasses hundreds of different tribes, from the Inuit of Alaska to the Cherokees of the southeastern woodlands, each of whom has its own unique culture and language.
For more information: https://en.wikipedia.org/wiki/Native_American_Day