There are other options available for the default. This is not exclusive to the catalogedDate field, and can be used for any field using a date format.
Relative
today + 2 days
today + 14 weeks
today + 1 month
today - 1 year
today + 3000 seconds
Absolute (format should follow what is in remote refs)
01/01/2022
2022-01-02
05/2022
This information is contained in Editing Forms in Specify 7, along with many other helpful explanations of forms in Specify 7. Hope this answers your question!