RESTful Service Best Practices
Recommendations for Creating Web Services
It gives a solid recommendation for RESTful services:
"... always use the same format, including the time portion (along with timezone information) in the string. ISO 8601 time point format is a good solution, using the fully-enhanced format that includes hours, minutes, seconds and a decimal fraction of seconds (e.g. yyyy-MM-dd'T'HH:mm:ss.SSS'Z')."It doesn't directly address storage directly, but it's such a great resource, I wanted to share it.