Clocks in Bulgaria go back one hour at 4:00 am local time on Sunday, 25 October. The country switches to standard, or winter, time, the Bulgarian Institute of Metrology said.
The institute announced the change on Wednesday, 21 October. This time it falls on the day of the presidential election.
See also: Clock change: clocks go back one hour on Sunday, 25 October
Voting starts at 7:00 am.
Smartphones, computers and smart devices change to the new time on their own.
The change follows Directive 2000/84/EC of the European Parliament and of the Council of the EU, dated 19 January 2001. The Council of the EU says that under the current rules, member states move to summer time on the last Sunday of March. On the last Sunday of October, they return to standard, or "winter", time.