The Timeline is a method of keeping track of the years in the Greetings Adventurers podcast. All dates are based around comments made in Episode 59 - Weird Swamp, where it is established that the year before the then un-named Ätlän-tã Fælcons went back in time, the current year was 1700 DR. This in turn was based on something from Forgotten Realms, I believe. It is roughly estimated that around a year passed before the Five Year Gap, resulting in the party getting back together in 1706. Another year or two passed, resulting in the Seven Year Gap taking place between 1709 and 1716. This makes the current year, probably, 1716.
This is all very circumstantial, however, and all dates are to be taken with the worlds largest grain of salt. This is in part due to a recurring goof that...
Game Time is the Same as Real Time
Beginning with Episode 61 - Tavern of WHOA, Michael DiMauro has put forward that the time that has passed in the world of Drunkeros is exactly the same as the amount of time that has occurred in the real world. This is despite the fact that some episodes take approximately 6-18 seconds, and some story arcs feature several episodes taking place over the course of one or two days. This is all strongly contested by one Tim Lanning, who points out how ridiculous it is that the Ätlän-tã Fælcons would just be standing around for one week, and how long it takes to get anything done under these restrictions. Who won? Who's next? You decide.
Another running goof is that of Wizard Years. Several Wizard over the years, notable Zird the Arcane and Riekert Svenson, claim to be a certain number of "Wizard Years" in age, which is established to be the same as dog years, so equal to seven human years. It is unknown why they number year this way, as no other races do this. They would just say that they are 700 years old, or whatever. Probably, this is one of those "jokes" that I've been told about.