Existing systems:

• SemVer
• Calendar Versioning
• Sequential Versioning
• Hash Versioning
• Build Number Versioning

For a blog, the most complete system found by the author is:

• YY: The year of the most recent update.
• Push: A sequential counter tracking the total updates made during the year.
• Type: Categorizes the nature of the update:
  • N: New post.
  • U: Content update (e.g., clarifications or expansions).
  • F: Fix (e.g., typos or formatting corrections).
  • X: Feature update (e.g., design or functionality changes).
  • M: Mixed updates involving multiple types of changes.
• DDMM The date (day and month) of the latest update.

For example the version number v24.628.M.2111 tells me that:

• The blog was last updated in 2024.
• There have been 628 updates so far this year.
• The most recent update involved multiple changes on November 21st.