Time Difference: New York City to Lisbon, Portugal

New York and Lisbon usually have a 5-hour gap, but it drops to 4 hours for a few weeks each year due to mismatched daylight-saving switches.

Standard Schedule (Most of the Year)

• NYC (ET): EST (UTC-5) / EDT (UTC-4)
• Lisbon (WET): WET (UTC+0) / WEST (UTC+1)
• Both on standard time (Nov–Mar): 5 hours. 12:00 NYC = 17:00 Lisbon.
• Both on DST (late Mar–late Oct): 5 hours. 12:00 NYC = 17:00 Lisbon.

The Two "Mismatch" Windows

1. Mid-March to late March: NYC on EDT (UTC-4), Lisbon still on WET (UTC+0) → 4 hours.
2. Late October to early November: NYC still on EDT (UTC-4), Lisbon back on WET (UTC+0) → 4 hours.

During these ~2-week windows, 12:00 NYC = 16:00 Lisbon.

Pro Tip

Don't memorize—check a world clock (timeanddate.com, Google "time in Lisbon") when scheduling. The mismatch weeks shift slightly each year.