India, Oct. 30 -- Halloween may bring to mind costumes, candy and spooky decorations, but the holiday has deeper historical roots. Ancient Celtic traditions, seasonal rituals and beliefs about the spirit world helped shape the Halloween celebrations people know today.

One of these traditions is Samhain, an ancient Celtic festival that marks the end of the harvest and the beginning of winter. In Hindu culture, Pitru Paksha offers another example of a period dedicated to remembering departed ancestors. Although these observances come from different cultures, both highlight how people honour their connection with those who came before them.

Here is what you should know about Samhain, its Celtic origins and its similarities with Pitru Paksh...