Smith 1999. Op. cit is contrasted with ibid., an abbreviation of the Latin adverb ibidem, meaning in the same place; in that very place which refers the reader to the title of the work in the preceding footnote. The easily confused idem (sometimes abbreviated id.
Just to be safe I would have to say leave it in a room temperature area; away from any windows or heaters that can affect the temperature of the egg; for about 6 or 7 hours at the least.
If you keep them long enough, they are more likely to simply dry up! But, don't leave eggs out at room temperature. They'll age more in 1 day at room temperature than they will in 1 week in the refrigerator. Room temperature is also an ideal temperature for bacterial growth..