Illinois is in the Central Time Zone in the United States of America (USA). US Central Standard Time (CST) is 6 hours behind Greenwich Mean Time (GMT-6).
Credit Card Account Number Verification - Card Type Identification. This page provides information about identifying a credit card type from a card number's numeric range and number of digits. First digit must be a 3 and second digit must be a 4 or 7. Valid length: 15 digits. First digit must be 3 and second digit must be 0, 6, or 8. Valid length: 14 digits. Valid length: 16 digits.
Mastercard credit card number length: 16 digits (normally). About credit card number digits in sequence: The first credit card number will always be 3, 4, 5 or 6 and it is known as the Major Industry Identifier (MII), this number represents the entity which issued your card. MasterCard MII=5,