Donald Trump took to his favourite social media platform, Twitter, to wish a Happy Diwali.
In the tweet, he shared pictures and a YouTube link which shows him participating in the Diwali Ceremonial Lighting of the Diya.
Today, we gathered for Diwali, a holiday observed by Buddhists, Sikhs, and Jains throughout the United States & around the world. Hundreds of millions of people have gathered with family & friends to light the Diya and to mark the beginning of a New Year.
He talked about the holiday being "observed by Buddhists, Sikhs, and Jains"… but forgot Hindus. And people noticed.
Diwali is celebrated by millions of people across southern Asia, and marks the start of the Hindu new year.
Others noticed that his tweet is a little late, as celebrations this year started on Wednesday 7 November.