Sunday sign: right submit pocket of breeches, with thumb out, pointing left side.
Monday sign: left submit left pocket, thumb out, pointing right side.
Tuesday sign: right submit right waistcoat pocket, with thumb out, pointing left.
Wednesday sign: the reverse—left submit left waistcoat pocket, with thumb out, pointing right.
Thursday sign: right submit right coat pocket, with thumb and forefinger out, pointing downwards.
Friday sign: exactly opposite—for right, read left.
Saturday sign: putting the very first three fingers from the right hands to that particular area of the right eyebrow then the ear, and thus drawing it along up until the 3rd finger touches the nose.
Regrettably, these signs most likely will not work today. The data originates from Strategies of the Freemasons Revealed with a Disgusted Brother, released in 1759. Based on Wikipedia, the Freemasons periodically change their secret signals, to be able to have them secret. Nowadays, you may even be needed to create some type of certificate, or documents, to demonstrate your Freemason membership.