Best timestamp format for CSV/Excel?

Question

I\'m writing a CSV file. I need to write timestamps that are accurate at least to the second, and preferably to the millisecond. What\'s the best format for timestamps in

Answer 1

"yyyy-MM-dd hh:mm:ss.000" format does not work in all locales. For some (at least Danish) "yyyy-MM-dd hh:mm:ss,000" will work better.