Odd running time

A four day trip to the UK, with 3 runs in London. That ended up with me running on this schedule:

• Wed 7:30am MDT at home.
• Thur 8:00am MDT/3:00pm GMT
• Fri 11:30pm Thur, MDT, 6:30am GMT
• Sat 00:00am MDT, 7:00am GMT
• Sun 4:45pm MDT

A change of:

• 
  
• 24.5 hours
• 15.5 hours
• 24.5 hours
• 28 hours

Always weird when I go overseas.