Hong Kong is 13 hours ahead of Philadelphia during Eastern Standard Time. Philadelphia uses EST (UTC-5) while Hong Kong uses Hong Kong Time (HKT, UTC+8). When it's 12:00 PM in Philadelphia, it's 1:00 AM the next day in Hong Kong.
During Philadelphia's daylight saving time (March to November), the difference reduces to 12 hours as Philadelphia moves to UTC-4. Hong Kong does not observe daylight saving time.
Best calling time: 7:00 PM - 10:00 PM Philadelphia time. This corresponds to 8:00 AM - 11:00 AM in Hong Kong (or 7:00 AM - 10:00 AM during EDT).
Philadelphia and Hong Kong both have significant financial sectors. While no direct flights currently operate, connections through major hubs take about 17-20 hours.