Moldova will end daylight saving time (DST), also known as summer time, on Sunday, October 25, 2009. Daylight saving ends when the clocks move one hour back from 4am (04:00) to 3am (03:00) local time. The clocks will turn back by one hour and the nights will become longer. Sunday will have 25 hours and will be the longest day this year, Info-Prim Neo reports. British researchers say the switch causes fatigue and the humans need three days to adapt themselves to the change. Experts say relaxation is the best way of overcoming this period. It is indicated that the people should relax for 30 minutes before sleep. All the countries of the European community switch to winter time on the last Sunday of October, at the proposal of the United Nations Economic Commission for Europe. It is considered that delaying the nominal time of sunset and sunrise reduces the use of artificial light in the evening and increases it in the morning.