While multiple web search results confirm that 'International Sherlock Holmes Day' is observed annually on May 22nd, there is no evidence in the provided text to confirm that celebrations actually took place 'earlier this month' relative to the current date of the article. The evidence defines the date of the holiday but does not confirm a specific event occurrence for the current month.

The provided evidence for this claim is entirely irrelevant. The web search results discuss credit unions, city council members, and dictionary definitions, while the Wikipedia results provide general information about Sherlock Holmes and his adaptations. None of the provided sources mention the Sherlock Holmes Society of London, Reichenbach Falls, or a reenactment of a death scene.