You can set the units to be used on your farm and the season start date that suits you.
To change both, go to farm settings > select farm info > adjust the season cut-off date and area unit.
By default Farmable sets the start date to
1st January if your farm is in a country in the northern hemisphere
1st July if your farm is in a country in the southern hemisphere
How is the season cut-off date used?
We use these season cut-off date to determine when you start a new year/season, to reset product usage for crop treatments as harvest has taken place and to accumulate costs and revenues. It helps to organize production statistics and records for year-on-year comparisons.