Today was my last day at work. At least I thought so.
A few weeks ago I officially quit my job and told my bosses that I have remaining vacation days and will thus leave in early October with my contract running out in November.
However, we never discussed specific dates. We have a holiday calendar which gets updated every now and then but was broken and not visible to me for the last few weeks (we are a small startup so things are not that organized).
Based on my memory and, assuming that I have 19 days remaining holiday, I just set a date for my last day at work by myself, based on which I though was correct.
Today my boss asked me about my official leaving date (according to my contract and not my last day at work, he knew that that was today) and my remaining holidays. A bit surprised I replied that I checked it myself and that it should be okay. He replied that he will check it and write me an email the next days.
Today after work I double checked, just to be sure, and noticed that I wrongly assumed that one day is public holiday, plus I may be out by one day in my calculations (not quite sure). So instead of 19 days it may just be, 19 - 1 (due to miscalculation) - 1 (due to wrongly assumed public holiday) = 17 days.
It actually does not make that much sense to come in again for work, since I said goodbye to everyone and finished the project. I left with a good relationship and do not want to appear as if I want to sneak some extra holiday. Should I just wait and hope they do not notice or write an email apologizing and informing them they can discount the additional hours from my last paycheck?