You can find the detailed schedule here.

Dec. 29:	Leaving for Santiago
Dec. 30	Continuing to Punta Arenas (arriving at midnight)
Dec. 31	Local excursions
Jan. 1	Departure by ferry for Navarino (33 hour navigation)
Jan. 2	Arrival in the evening in Puerto Williams
Jan. 3-16	Puerto Williams
Jan. 3-6	Camping at Lake Robalo
Jan. 16	Departure for Punta Arenas; overnight in Punta Arenas
Jan. 17	Departure for Santiago early morningDeparture for the US in the evening
Jan. 18	Arrival in the US