Daylight Saving Time Change in 2025: When Summer Time Begins

On the last Sunday of March (March 30, 2025), when we switch to summer time, it could negatively affect our bodies as we lose an hour of sleep. While most people adjust within a few days after the time change, some may need more time and feel drowsy during the morning hours, experience fatigue, and increased stress, which can impact productivity at work or school for students. The time change disrupts our biological clock. Studies show that in the first few days after the time change, there is a slight increase in the risk of heart attacks and strokes, directly linked to sleep disturbances. When the clock strikes 03:00 a.m., you should move the hands forward by one hour to 04:00 a.m. According to the Ministry of Infrastructure and Transport’s announcement regarding the time change, citizens are reminded that on Sunday, March 30, 2025, the application of winter time concludes under EU Directive 2000/84. Therefore, clocks must be adjusted forward by one hour, from 03:00 a.m. to 04:00 a.m. In March 2019, the European Parliament voted to end the practice of adjusting clocks by one hour in spring and autumn starting from 2021. However, the pandemic and the war in Ukraine delayed these plans, so the transition from winter to summer time continues as usual. Daylight saving time was initially tested in Greece in 1932 but was quickly abandoned. In 1973, due to the energy crisis affecting Europe, many countries, including Greece, adopted this measure, officially implemented in Greece in 1975.