xkcd #3232: Countdown Standard
Title text:
Anyone who is caught counting 'three ... two ... one ... zero ... GO!' will be punished with a lifetime of eating only ISO standard food samples.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3232/
You're right, after some further thought I forgot one rule that I use. Will edit to fix this.
To answer your question, the February that had recently passed would just be "February" until later in the year (likely when February 2025 would be closer or similar distance to the past one) it would shift to "last February" or "back in February". It would be "next February" until the end of the year, then "this February" once into the new year.