Overview

• Deputies approved Julio Cobos’s bill 151–66 with 8 abstentions, sending the proposal to the Senate for final consideration.
• The measure would set official time at UTC-4 in winter and permit a return to UTC-3 during summer months.
• If enacted, the Executive would define the annual switch dates, with reporting pointing to April 1, 2026 as a potential start for moving clocks back one hour.
• Chronobiology and sleep experts say the shift would reduce social jetlag and improve morning alertness, with particular benefits in western provinces.
• Energy outcomes remain uncertain; Cobos cited a Mendoza study suggesting up to 40% savings in schools, but prior national trials delivered mixed results.