What is festival october 2015?

As an AI language model, I don't have access to the exact events of October 2015, but I can provide some general information.

October is known for many festivals and celebrations around the world. Some of the highlights include:

1. Oktoberfest: This famous German festival is held annually in Munich and features lots of beer, food, and music. It typically lasts for about two weeks and attracts millions of visitors.

2. Halloween: This holiday is celebrated on October 31st in many countries, with traditions such as carving pumpkins, dressing up in costumes, and going trick-or-treating.

3. Diwali: Also known as the Festival of Lights, Diwali is a Hindu holiday celebrated in many parts of South Asia. It typically falls in October or November and involves lighting candles and fireworks, as well as exchanging gifts and sweets.

4. Day of the Dead: This Mexican holiday, also known as Dia de los Muertos, is celebrated on November 1st and 2nd, but preparations and events often begin in late October. It involves honoring deceased loved ones through altars, parades, and other rituals.

These are just a few of the many festivals and events that may have taken place in October 2015, depending on the country and region.