The United Kingdom of Great Britain and Northern Ireland will have parliamentary elections next Thursday, and the last presidential elections in the United States were on a Tuesday.
In most other European countries, elections are generally scheduled for Sundays (see this overview). The obvious advantage is that most people have no trouble coordinating voting with their work times. Having elections on workdays, by contrast, is likely to cause trouble for some people with inflexible work hours and long commutes, even with voting hours from 7 a.m. to 10 p.m. as in Britain.
The British Fixed Term Parliaments Act even decrees Thursday elections by law. The reasons given on the Wikipedia page of the election day (minimizes drunkenness and influence of church sermons) is unconvincing to me in modern times.
Why are elections in the UK not held on any other day apart from Thursday?