If you are talking about the variable of year it starts in year 1 instead of year 0.
This was for a number of reasons including making it easier to make the time system work and then when the new year rolls around it adds 1 to the variable. I hope that answers your question.
If it does not answer your question feel free to join the discord for further assistance.
If you do not have discord then feel free to comment below and I will respond when I can.
I found the fix and I will upload a new version of the template tomorrow.
The fix is pretty simple where it says on the bed event at the top
if the variable main days is 28
change that
variable to days of the season.
It seems that was an oversight of mine and I am very thankful you have brought that to my attention.
The making of this template took 120hours and I made this error as I first started with a different time system when I was experimenting with the time and crop growth design.
Thank you for bringing this to my attention.