What is Clear Days?

Legal Definition
If a certain number of clear days be given for the doing of any act, the time is to be reckoned exclusively, as well of the first day as the last. Rex v. Justices, 3 Bam. & Aid. 581; Hodgins v. Hancock, 14 Mees. & W. 120; Slate v. Marvin, 12 Iowa, 502.
-- Black's Law Dictionary
Legal Definition
Days intervening, exclusive of the first day and the last one.
-- Ballentine's Law Dictionary