Swiss Card validation - does it work on 24hr clock

Hi Jean! The valid days of the Swiss Pass are measured in dates, not hours. So a Swiss Pass first used on March 27, regardless of the exact time, is valid up to and including March 30. If you need 5 days to be covered and like traveling in 1st class, this offer might just be what you're looking for. If not, you can best consider the Swiss Half Fare Card or Swiss Card mentioned in this post.