When it's 1000 in Dallas it's usually 1600 in London.
(Due to the United States and Europe starting and ending daylight saving time/ summer time on different dates, there's an average of 24 days per year in which London is 5 hours ahead of Dallas. Those times are from the second Sunday of March until the last Sunday of March and from the last Sunday of October until the first Sunday of November.)
When it is 10:00 AM CDT in Dallas, it is 4:00 PM BST in London, UK. The UK is 6 hours ahead of Central Daylight Time.
Dallas Cairns died in 1941, in London, England, UK.
Dallas Bower was born on July 25, 1907, in London, England, UK.
Dallas Bower died on October 18, 1999, in London, England, UK.
Dallas Cavell died on February 15, 1993, in London, England, UK.
Richmond is in Surrey, UK. London is in Greater London, UK. The UK is small. the two destinations will be within 1000 miles of each other.
London and the rest of the United Kingdom are in the same time zone, GMT (0). So the time of 11:00 am in the UK would be the time also in London.
Between Dallas, Texas, United States and London, England, United Kingdom, as the crow flies: 4757 miles (7656 km) (4134 nautical miles)
http://www.ramadantimetable.co.uk/ramadantimetable-uk/london
France is one hour ahead of the UK; 1000 in London is 1100 in Paris.
Departure point: London Heathrow Airport, United KingdomDestination point: Dallas, TexasEstimated flight duration: 9 hours, 30 minutes
The UK is five hours ahead.