Mine might seem silly to some - but I'm kind of young, not married and no kids. So here's one of the best days of my life for me.
I HATED high school. I went through the same school district for 12 years and I could not wait to get the heck out of there. I got accepted into my first choice college and I was just so beyond DONE with high school and my home town. So I attended graduation, which was great. Went to all the Senior activities, which were fun. My graduation party was the day after graduation, and that night after my party I went to bed super early, exhausted.
I woke up at about 7:30AM the next day. No one else was up in my house. It was a gorgeous day. Graduation, high school, and that part of my life were behind me forever. I had the whole summer in front of me to do what I wanted and moving off to college at the end of the summer.
That morning - quiet and alone - was the best day of my life. It was the most amazing feeling I have ever had. Relief, happiness, pride, excitement. To this day I remember that morning crystal clear, it was phenomenal, and I will never forget how I felt. Pure happiness.
I just have to say, this is great! I love the way you describe your emotions, and I can see why that day would have felt almost magical.
I am going to ponder this question before I respond, and this is a fantastic thread topic!
Okay, I do have to say that there were two best moments in this regard:
The day I got moved from the hellish 3rd grade class with the awful teacher to the gifted 3rd grade class with the nice teacher (I remember the day my principal called my dad, told him I tested very high on the IQ test and said they wanted to move me to the other class and asked if I wanted to be moved the next day or the end of the week -- I said the next day because I absolutely hated the class I was in; my classmates were awful, as was my teacher, a woman who once asked if I had medical issues because I, an 8-year-old, kept needing to go to the restroom shortly after class started).
The day I moved to the other half of my office away from my bullying coworkers and bullying former supervisor (I got a new supervisor also).
In both cases, my life immediately took a turn for the better -- it wasn't all roses afterwards, but I definitely was in a better state as a result of being removed from those situations.
Oh, and one more -- when I found out I got into the magnet program for the school I had been bussed to (my school I mention above I hated as a lot of the kids I knew at this point -- 5th grade -- were awful cliquish snobs). We all got bussed from our school high in our expensive neighborhood down to the more mixed finances neighborhood. That school had a magnet program so I applied for the next year. I was so happy to never go back to that awful home-area elementary school. I thrived in the magnet program where we were assessed on our academics, not by the clothes we wore and the color of our skin (why, yes, awful elementary was mostly ethnicity not mine; magnet program, OTOH, was quite diverse). Now that I think about it, all but one of my FB friends from elementary school were from the magnet program school. Only one is from awful elementary school (and that was because we had a common mutual friend -- the only class I'd had with him was the better 3rd grade class; when we were bussed in 5th grade, he was in mutual friend's class)