Call United Kingdom from Vietnam

When calling internationally, it's important to consider time zone differences to ensure you're calling at a convenient time.

Vietnam operates on Indochina Time (UTC+7) year-round with no daylight saving time changes, making scheduling calls predictable. For best results, call during Vietnam's business hours of 9 AM to 5 PM (02:00-10:00 UTC), and remember that Vietnam is typically 12-15 hours ahead of U.S. time zones, so early morning or late evening calls work best from North America. When calling the United Kingdom, which operates on GMT (UTC+0) in winter and BST (UTC+1) in summer, aim for late morning to early afternoon your time if you're calling from the Americas, or early evening if calling from Asia to catch UK business hours (9 AM-5 PM). Remember that the UK switches to Daylight Saving Time on different dates than many countries, typically the last Sunday in March and October, so verify the current time difference before important calls.