The worst day to buy gas, by state:

❚ Saturday: Alabama, Connecticut, Hawaii, Kansas, Maine, Maryland, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, Oregon, South Carolina, South Dakota

❚ Sunday: Arkansas, California, Colorado, Delaware, Georgia, Iowa, Oklahoma, Rhode Island, Tennessee, Texas, Virginia, Wisconsin

❚ Friday: District of Columbia, Kentucky, Louisiana, Minnesota, North Carolina, North Dakota, Pennsylvania, Vermont, Washington

❚ Thursday: Arizona, Florida, Idaho, Illinois, Indiana, Michigan, Ohio, West Virginia

❚ Wednesday: Alaska, Nevada, New York, Wyoming

❚ Tuesday: Utah