I was bored so I made sometimeline based on A Scandal in Bohemia

This is what I got (you can also point out and correct if you notice any mistakes or missing pieces) and I hope you will find some information here that you didn't know:

In 1858:
– Adventurer and opera singer ‌Irene Adler was born in New Jersey, US

In 1883:
– ‌In his youth the future King of Bohemia meets Irene Adler at the Royal Opera in Warsaw and takes secretly a photo of them together

Earlier in the 1880s:
– ‌A Study in Scarlet (Watson's first case with Holmes in the early 1880s)
– ‌The Sign of Four (takes place within Watson's engagement period according to Watson)
– ‌Watson had now married and returned to practice again, he rarely saw Holmes after moving out from the Baker Street and has gained 7 ½ or 7 pounds since their last meeting
– ‌Unknown time: the Darlington Substitution Scandal; a married woman grabbed at her baby (to save her own)
– ‌Unknown time: the Arnsworth Castle business; an unmarried woman reached for her jewel-box (revealing its whereabouts)
– ‌Holmes helped solve the Trepoff Murder in Odessa, Italy (News)
– ‌Holmes helped solve the Tragedy of the Atkinson Brothers in Trincomalee, Sri Lanka (News)
– ‌Sherlock Holmes served the reigning family of Holland for a matter of such delicacy that he couldn't confide it even to Watson (News); he got a fine ring as a reward (m. A Case of Identy)
– ‌King Wilhelm Gottsreich Sigismond von Ormstein of Bohemia becomes engaged to Clotilde Lothman von Saxe-Meningen and plans to marry
– ‌Someone planned to blackmail the King of Bohemia with a photo taken of he and Irene Adler (but this someone wasn't Adler herself)
– ‌The king hired men to try to get the photo back five times (twice burglars ransacked her house, once they diverted her luggage, and twice she has been waylaid without results)
– ‌Adler is warned that the king might hire Sherlock Holmes next and she learns Holmes's address

Earlier in the March 1888:

• ‌The king sends Holmes a letter and travels incognito from Prague to London where he booked a room in the hotel Langham
• ‌Watson has recently visited the countryside on a rainy day and got his shoes muddy (his maid Mary Jane has ruined Watson’s one shoe while cleaning it and got a notice from Mrs. Watson)

The evening of March 20, 1888:
– ‌Watson arrives at Baker Street at a quarter to seven in the evening to meet Holmes because he was overcome by a burning desire to see his old friend again
– ‌Holmes explains that he previously calculated that their staircase has 17 steps (8+1+8) which Watson hasn't noticed and also calls Watson his Boswell (biographer)
– ‌Holmes is getting an important client who wants to keep his identity a secret but he recognizes the stranger as the King of Bohemia
– ‌The king says that he is getting married, but is afraid that a photograph will ruin the wedding plans. Holmes accepts the case and his advance is £300 in gold and £700 in notes

March 21, 1888:
– ‌Holmes has left just after eight in the morning disguised as a groom and has been watching Adler all morning at Briony Lodge, Serpentine Avenue, St. John's Wood 
– ‌A disguised Holmes enlists to take care of the cabdrivers' horses at the Serpentine mews and gets some information about Adler there:
– ‌1) Adler rarely goes out and even then only at five o'clock in the evening to sing somewhere and returns at seven o'clock to eat dinner
– ‌2) Adler is often visited by a dark man named Mr. Godfrey Norton, an English lawyer who lives in the Inner Temple
– ‌After Norton's last visit, Adler and her cabman John hurries to the Church of St. Monica, Edgeware Road, where she marries Norton at twenty-five to the 12th, and Holmes, who came after, is dragged to their witness
– ‌After they all disperse in different directions, Holmes makes a plan for the evening and hires a mixed group of men to help him
– ‌Watson arrives at Baker Street at three in the afternoon as they had talked the night before and he stays there to wait for Holmes
– But ‌Holmes doesn't come back until it was almost four o'clock in the afternoon and asks for a slice of ham and a beer because he hasn't eaten anything (the tray is brought by Mrs. Turner?)
– ‌After explaining the situation to Watson, Holmes disguises himself as a simpleminded Nonconformist clergyman (the same "venerable Italian priest" disguise as in The Final Problem?)
– ‌It was a quarter past six in the evening when they left Baker Street, and ten to seven when they reached Serpentine Avenue
– ‌A street brawler hired by Holmes starts a fight and hit some "clergyman" The priest, who was helped into Adler's Bijou villa by a few gentlemen
– At Holmes' signal, Watson throws a smoke bomb through the window and calls out a false fire alarm
– ‌Holmes and Watson exit arm in arm through Edgeware Road all the way to Baker Street (although this was common practice for Victorian men who walked in pairs)
– ‌Adler disguises herself as an young man and follows Holmes and Watson, cheerfully wishing them good night (this is something she often does to get some privacy and freedom)

March 22, 1888:
– Early in the morning, Adler has quickly packed all her things and left before the others arrive
– ‌Holmes and Watson eat toast and coffee for breakfast and after the king has arrived at eight o'clock in the morning, they take a cab and drive to Briony Lodge
– ‌The elderly maid says that Adler has gone to Charing Cross station for the 5:15 train to leave the country
– ‌Adler has left a letter for Holmes explaining how he recognized the detective in the disguise and kept the original photo for safety
– ‌Holmes asks the king for another photo as a souvenir. He also received a golden snuffbox with a great amethyst in the centre of the lid (m. A Case of Identity)

Consequence of the Scandal in Bohemia:
– ‌Due to Adler's influence, Holmes stopped joking about (downplay) women's intelligence
– ‌Holmes always refered to Adler as "the Woman" with great respect; but not because he could have felt love for her

April 1890:
– ‌The King's ban on publishing the report / duty of confidentiality expires after two years

Spring 1891:
– ‌The late Irene Adler has passed away at the age of 32 or 33

June 25, 1891:
– ‌Watson published the story in The Strand Magazine as an obituary for late Irene Adler