The second Adriatic sailed from New York on October 5 1921. I am wondering what day she arrived at Cherbourg. I have scoured the newspapers at newspapers.com with no success. I would be grateful to be pointed in the right direction - thanks.
A trip Southampton - New York took about 7 days with a steamer in those days, so I would guess she arrived in Cherbourg around October 11th (11-12-13), depending on the weather conditions. Adriatic returned from Southampton on October 19th. Departure days (Southampton and New York) were on wednesdays.
At britishnewspaperarchive.co.uk (subscription required, but I haven't been asked for money yet) I found this in the newspaper Western Daily Press on Oct 14 1921 under SHIPPING NEWS.
It's likely that she arrived Cherbourg around 08:00 in the morning of October 13th, 1921.
She arrived 4:20 pm in Southampton. Crossing the channel from Cherbourg would have taken about 4 hrs, so she must have left Cherbourg around noon. Typically they would have stopped in Cherbourg for about 4 hrs to land Passengers for the Continent.