Study in Pink starts with the first 3 murders, but everything after Sherlock is introduced is limited to about 48 hours. I'm guessing it's late spring because of the rain in the first scene and the fact that the characters don't seem particularly warmly dressed. Let's call it Spring 2010.

The Blind Banker tells us that Sherlock is 8 years removed from university, making him 29-30. There's definitely indiciation that time has passed since the last episode, but it doesn't seem to be very much based on the fact that  interactions b/w Watson and Sherlock are still a little stiff and they're both getting used to each other.  Let's say late Spring 2010.

The Great Game definitely seems to pick up later, but I don't think there's anything that allows us to put a date on it. Maybe early 2011?

Scandal in Belgravia starts by talking about John blogging cases we've never heard of, so clearly some time has passed. The one blog post shown on the screen includes the date May 30th. Time passes, and Lestrade mentions a plane crash in Dusseldorf the day before. They celebrate the holidays, and Irene gives Sherlock the phone at Christmas. She says she let Sherlock Holmes hold onto it for 6 months, so a year has passed since the start of the episode. When Mycroft is talking about Bond Air, he says that a passenger had "missed his flight" so to speak on a similar project with the Germans a "while back" (meaning the Dusseldorf crash). So this episode would go from early 2011 through xmas 2011 and into mid-2011.

Hounds takes place over a single weekend. Let's say it's still Summer 2011.

Reichenbach is kind of ambigous, there's a montage at the beginning where they're solving cases that looks like it builds over several months. Then Morarity breaks into the Tower of London. I got the impression that it was at least a few months before he went to trial but I might be wrong. After the trial, Sherlock is on-guard and assassins start moving in. Then Donovan goes to the higher-ups about Sherlock, and things pretty much happen overnight from there. Maybe Fall 2011?

Then two years pass

Empty Hearse seems to be only set over a week or so. It finishes right after Guy Falkes night (november 5th) So this would be Fall 2013

Sign of Three focuses on what appears to be a spring/summer wedding.  Let's say they get married in summer 2014, because Mary doesn't look hugely pregnant at Christmas or in HLV so it can't have been more than six months or so.

His Last Vow is convoluted but picks up about a month after the wedding I believe. John finds Sherlock, meets with Magnussen the same afternoon, and the two break into CAM's office that night. Sherlock gets shot, starts to recover. When he, John, and Mary sit down to talk, he says he was shot last week. Then we move to Christmas, at which point Mary is visibly pregnant but not huge. Sherlock takes the laptop and kills CAM. He's then put on a plane, probably within the week. So this episode would start in late summer and finish Christmas 2014.

I'm sure there are mistakes, so let me know and I'll edit it

Last edited by melissak334 (January 3, 2015 5:46 am)