Bangor Public Library recently issued the following announcement.
Event: Columbus Day (regional holiday)
When Monday, Oct 12, 2020
Description: Holiday or observance in: Alabama, Arizona, Colorado, Connecticut, District of Columbia, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Utah, Virginia, West Virginia, Wisconsin
Original source can be found here.