I had no plans to go Denmark during my trip to Iceland, Norway, and Sweden, but I made a last-minute decision to visit. After all, my goal is to hit every country on Earth and I was close enough. I took the earliest train (SJ train) from Stockholm and departed at 6:16 AM for the 5.5. To make the most of my day trip, I took a bus (Flixbus) back to Stockholm at 10:15 PM, which took about 9 hours. Is a day enough in Copenhagen? That depends on what type of traveler you are. Some people like to see everything a city has to offer, while others prefer to…