Hey Tom,
Most everything is at the Discourse default. Below are the post editing related settings and their current values.
I think you’re asking to change the post edit time limit from 1440 minutes (24 hours) to something higher, yes?
editing grace period
For (n) seconds after posting, editing will not create a new version in the post history.
300
editing grace period max diff
Maximum number of character changes allowed in editing grace period, if more changed store another post revision (trust level 0 and 1)
100
editing grace period max diff high trust
Maximum number of character changes allowed in editing grace period, if more changed store another post revision (trust level 2 and up)
400
post edit time limit
A tl0 or tl1 author can edit their post for (n) minutes after posting. Set to 0 for forever.
1440
tl2 post edit time limit
A tl2+ author can edit their post for (n) minutes after posting. Set to 0 for forever.
43200
edit history visible to public
Allow everyone to see previous versions of an edited post. When disabled, only staff members can view.
Yes
max edits per day
Maximum number of edits per user per day.
30