During the Autumn/Spring transition
periods the time difference between
New York and London is only 4 hours
instead of the standard 5 hours.
Some transition periods with a
4-hour time difference:
2025 (Autumn): Sunday, October 26,
2025 – Sunday, November 2, 2025
2026 (Spring): Sunday, March 8, 2026
– Sunday, March 29, 2026
2026 (Autumn): Sunday, October 25,
2026 – Sunday, November 1, 2026
2027 (Spring): Sunday, March 14,
2027 – Sunday, March 28, 2027
2027 (Autumn): Sunday, October 31,
2027 – Sunday, November 7, 2027