Ugh. It's been years. I accidentally locked myself out of a building we were doing some floor refinishing work in over a weekend a few years back. We had completed the work and were just loading the equipment back in the van and I left my jacket inside with my phone and the building keys in the pocket and someone closed the back door to the building so I couldn't get back in until Monday morning at 7am. Fortunately I had my car and house keys in my pants pocket so it wasn't a big deal. I just went a day and a half without a phone, which was nice, and went back Monday morning at 7am to pick my stuff up.