How to call Philadelphia in United States from United States:
1 - Exit code when making an international call from United States
1 + (601 or 662 or 769 or 573 or 315 or 215 or 267 or 484 or 610 or 423 or 865) + Local Number - International dialing code format
Note: United States and United States are both members of NANP (North American Numbering Plan) so when calling between these countries, 1 is used in place of the country exit code.
World time zone information: