In Star Trek, stardates don’t follow one universal formula, so it depends on which series your fanfic is based on. For The Original Series, you can choose a four-digit number followed by a decimal and keep it consistent throughout your story. For The Next Generation, stardates generally follow a more structured pattern, with the first two digits indicating the season. The page you found may be useful, but remember that fan-made formulas are only approximations.
In Star Trek, stardates don’t follow one universal formula, so it depends on which series your fanfic is based on. For The Original Series, you can choose a four-digit number followed by a decimal and keep it consistent throughout your story. For The Next Generation, stardates generally follow a more structured pattern, with the first two digits indicating the season. The page you found may be useful, but remember that fan-made formulas are only approximations.