Date/time formats in CB and CBSubs

Hi,
Many of the internal date formats are in the form of yyyy-mm-dd hh:mm:ss while registration pages can be accept dd/mm/yyyy. In some presentations of data to back to members both formats are presented. Is there any guidance available to present the date information consistently?
Regards, Robert

Dates and datetimes are always stored as UTC SQL formatted. They will display in whatever format you've selected within CB > Configuration > General or if you've overridden them at their usage (e.g. in the field). The displays should all be consistent throughout your site. If you're substituting a date or datetime field then be sure to use [cb:userfield field="FIELD_NAME" /] if you want it formatted as [FIELD_NAME] is the raw database value.

Jumping on this topic, is there a way to format the dates in CBsubs invoice settings with another presentation ?

Say 12 septembre 2018 instead of 12/09/18 ?

Can we use the following in CBsubs settings ?
[cb:parse function="date" date-format="dd-mmm-YYY" offset="UTC"] [DATE_ORDERED] [/cb:parse]

Thanks

Jumping on this topic, is there a way to format the dates in CBsubs invoice settings with another presentation ?

No, there are no parameters for that specifically. Date and Time formatting is generally based off what you've selected within CB > Configuration > General.

Can we use the following in CBsubs settings ?
[cb:parse function="date" date-format="dd-mmm-YYY" offset="UTC"] [DATE_ORDERED] [/cb:parse]

No, CB Auto Actions format functions only work in CB Auto Actions.