Here's an explanation of time-zone problems. Well it's a minor rant actually.
We had an occasion where DST and timezones gave us a free vacation in Paris ( although short.)
After ten days in Venice, the family walked to the bus stop to head to the airport for the ride home. Not seeing a bus, we casually asked a fellow passenger when the next bus was to arrive, and were told it would be in an hour and 15 mins. I asked the person why it was so long, and they said it's coming in only 15 minutes.
After a confusing back and forth, we learned that during the previous night, Venice had gone through DST. It was hard for this to sink in as we had already gone through DST back home before we left.
As this penetrated my brain, I realized I was going to have to pay for changing four plane tickets and maybe find a hotel.
With this in mind, we solemnly walked up to the ticket agent and told them our blunder. To our surprise, she said "oh, it's not your fault. It happens to a lot of people." We were stunned.
The agent then said she would rebook us with no additional fee, but unfortunately there were no planes until tomorrow. We would need to stay in Venice unless we were willing to fly to Paris and spend the night, then fly home from Paris the next day.
That was an easy answer. Suppressing a grin, I said we'd go to Paris, which we did.
After landing and making our way to the little airport hotel, we dumped our bags and caught the metro to the Eiffel tower, which we went up, and then had gyros in a little spot nearby. It was quick and a bit of a mad rush, but it is a strong memory for each of us.
Sometimes you get lucky.