Step across the 180th meridian with one foot in yesterday and one in tomorrow — a once-in-a-lifetime geographical ceremony guided by a private expert aboard your vessel as it crosses the IDL at sea.
What to expect
As the ship glides across 180° longitude, a dedicated enrichment host marks the precise moment with a champagne toast on the open deck. You'll receive a personalised gilt-edged certificate confirming you crossed the Date Line. The host delivers a fascinating talk on the history, cartography, and human drama behind the IDL. The evening concludes with a private stargazing session in the Southern Hemisphere darkness — far from any light pollution.
Good to know
This is an at-sea experience — no tender or port transfer needed. Pre-register with the Seabourn concierge desk at embarkation to secure a place in the small-group hosted moment. Timing depends on your itinerary's crossing time; ask the navigator's desk 24 hours ahead.