Describe a dinner that you enjoyed

Why did you forget about it?
I forgot about it because:
it just slipped my mind
I didn't write it down in my planner
the conversation was going to be unpleasant, so my brain subconsciously erased this information
the receptionist didn't remind me about the appointment
my personal assistant forgot to remind me about it
this meeting was arranged so long before that I forgot about it
When was it?
sentence starters:
this happened...
this took place...
I don't remember exactly when this happened, but it seems to me it was...
As far as I remember it was...
when:
recently
just a while ago
a couple of months ago
X days (weeks, months, years) ago
just a couple of days (weeks, months) ago
several days (weeks, months) ago
last week (month, year)
yesterday
a long time ago
a long while ago