Missing payments. If you don't see a recent payment you've made, make sure you've allowed enough time for the payment to post to your account: Payments made by electronic check, by credit card, at a T-Mobile store, or over the phone usually post to your account right away, but it can take up to three hours.
Nothing in-game uses Kerbin days/years as far as I can tell. A day is defined as 86400 seconds, and a year as 365 days.
How many sunny days per year in Boston? Hi there, I estimated based on the NREL (nrel.gov) insolation maps and personal experience (living in Boston for 6 years) that it's about 230 days / year. Edit