In my story, I have an alien planet with a long and eccentric orbit that takes 1018 days. Now I'm trying to make a calendar out of it, dividing these 1018 days into shorter time units - months (inhabiting civilisation, of course, will name these units differently). But whether I divide year with a number of months to arrive at the number of days per month or with days per month to arrive at the number of months, or divide seasons into equal parts, I get decimals like 84.83 days per month with 12 month per year or 21.21 days per month with 48 months per year, or 15.42 months per year taking shortest of seasons, 66 days, as one month, 30.85 months per year when dividing this season in half.
How can I get a whole number of months with a minimal decimal for the number of days per month (which might be remedied with a leap year)?
Are there maybe some tools that may help with this?