> Is is possible to postdate the Entry Date for an entry?
> 
> The documentation lists the ability to forward date an entry, but I don't 
> see any ability to backdate an entry (edit the date to a date in the past).
> 
> Given that the entry date is part of the logbook entry file structure, it 
> wasn't obvious how to make this change.

The date is part of the logbook entry file structure because it's considered 
as a "stamp" which cannot be changed, so to document the real date when the 
message was written. In some installations this is very important.

If you need to change the date more freely, I would recommend to add another 
attribute which can be changed at will. Up to now this has to be a string 
variable so users have to make sure to enter the date in proper format, but 
you can prepopulate that with the current date like:

Attributes = Author, ..., Real date
Preset Real date = $date

This way the current date occurs in that field, but can be changed 
(backdated).

Note that the entry date can be changed directly in the YYMMDDa.log files in 
the data directory, if one has write access there and the elogd daemon is not 
running.