stand corrected
Agree that one was wrong, as in I stand corrected—we did go to Finland in 1985. This idiom was first recorded in John Dryden's The Maiden Queen (1668): “I stand corrected, and myself reprove.”

http://dictionary.reference.com/browse/stand+correct...

A random sampling of references I found almost insultingly simplistic include: "as far as possible," "broad daylight," "goof off," "good night." This last is defined as "Expression of farewell used when parting at night or when going to sleep."