It looks like your sentence got cut off, but I'll do my best to provide a helpful response based on what you've shared.

Halloween does indeed fall on October 31st and it is one of the most favorite holidays for many people around the world. It's a time when people enjoy dressing up in costumes, attending parties, carving pumpkins into jack-o'-lanterns, and participating in trick-or-treating.

If you were trying to complete a sentence about why Halloween is so favored, some possible endings could be:

- "...favorite holidays for many people because of the fun activities and festive atmosphere it brings."
- "...favorite holidays for many children due to the excitement of dressing up and collecting candy."
- "...favorite holidays for many as it offers a chance to embrace spooky themes and share scary stories."

Is there anything specific you'd like to know more about regarding Halloween?