When Is New Years 2025 Observed. Fireworks light up the midnight sky over sydney harbor bridge and sydney opera house during 2025 new year's day celebrations in sydney, australia, jan. New year day is observed on 1st of january can be regarded as the most widely celebrated event all over the world.

New year day is observed on 1st of january can be regarded as the most widely celebrated event all over the world. 1, 2025, is a federally observed holiday, according to the u.s.