Hi, I think I've confused myself on this topic. In general, is it acceptable practice to include a month variable in cross-sectional data for a non-time series application? I've collected two years worth of data in a single instance. I'm studying repair times for vehicles and I believe there may be month-to-month variability and certainly a COVID impact. I'm not building a time series model. i.e. I don't care to forecast repair times in the future. I simply want to create categorical variables for spring, summer, fall, winter etc.