Jeff,
Outside of JMP, we frequently use the following date format: DD-Mon-YYYY. For example 15-Dec-1987. This prevents confusion when using the MM/DD/YYYY format (e.g. 12/15/1987), because our European colleagues reverse the month and day and use DD/MM/YYYY (same date 15/12/1987).
JMP does not have this format, so I use ddMonyyyy. When presenting information to users I create a computed text column that mimics the desired format.
Can you please put in a request for the DD-Mon-YYYY format?
Thanks,
Peter