The short answer is no - Funnelback's has no concept of a time when it interprets and sorts by date.
However, you can achieve a date/time sort if you use an appropriate representation of the date time and then use either a numeric or alphabetic sort against the field.
e.g. if you represent your datetime as a format as
e.g. 2017-10-21 23:54:33
and index it as a standard metadata field then it's possible to sort this using the alphabetic sort options.
You can also represent your datetime as a Unix epoch timestamp, index this a type 3 numerical metadata and then this can be sorted numerically.
Note: if you want the date indicated by the datetime field to be assigned as the document's indexed date then you'll need this stored in a separate field from the datetime that's mapped to the date.