Priya Hemenway, “Hindu Gods: The Spirit of the Divine”, 2003 was the topic of an earlier blog post.
Here I present: Om Lata Bahadur, “Hindu Festivals & Ceremonies “, 2nd edition, 1997 a book on Indian holidays. 
Here I presented: Om Lata Bahadur, “Hindu Festivals & Ceremonies “, 2nd edition, 1997 which was an Indian holidays. 
“Diwali” is celebrated in the month span of October-November. “Diwali”, like the Jewish “Hanukkah” is a festival of light. It is holiday #24 on page 208 of the book.
Om Lata Bahadur, “Hindu Festivals & Holidays”, 2nd edition, 1997 is a useful reference book for Indian events; and, is recommended by me.
The Hindu-Buddhist world, (from India to Japan) is best understood as Siddhartha Gautama the Buddha. The Judeo-Christian world, (globally) is best understood as Jesus the Christ. Hindu-Buddhist and Judeo-Christian holidays are many and diverse.
Ugadi marks the new year in the south Indian states of Andhra Pradesh, Karnataka & Telangana. Ugadi in the year 2022 is Saturday, April 2. Hindu calendar New Years Day is Ugadi.
The book contains Hindu time concepts; again, Ugadi (non-religious) holiday is New Years Day.
2 April 2022 was New Years Day (Ugadi) on the Hindu calendar. It always falls into the month span of March-April in the lunar Hindu calendar. Gudi Padwa is the name of New Years Day in Goa & Maharashtra of south India (still 2 April 2022). In Hinduism the year is 2079.
All of India celebrates three annually: Dussehra, Diwali & Holi (Holi is a festival of colors); and, every twelve (12) years Kumbh Mela.
The graphic ABOVE is to emphasize these annual events: Dussehra, Diwali & Holi.
The ritual bathing of Kumbh Mela, every twelve (12) years is a pilgrimage to the sacred Ganges River by the Hindu.
