Overview
- The Chamber of Deputies approved the bill 151–66 with 8 abstentions, sending the initiative to the Senate.
- If enacted, clocks would move back one hour nationwide to shift from UTC‑3 to UTC‑4 beginning in April 2026.
- The draft contemplates UTC‑4 in winter with the option to return to UTC‑3 in summer to better match daylight cycles.
- Cronobiology experts expect health gains from earlier morning light and warn of short‑term, jet‑lag‑like adjustment effects.
- Transport, banking and IT systems would need coordinated updates as devices adjust, and potential energy savings remain uncertain.