I was thinking about this issue, too! I regularly would like to find old events (especially my own) and don't have a good solution yet.
Alternative to nostr.band for searching for older content? #asknostr GO!
CC: nostr:npub1aeh2zw4elewy5682lxc6xnlqzjnxksq303gwu2npfaxd49vmde6qcq4nwx saw you mentioning one in the last 24h and can't find that comment...
Discussion
Same here. I was looking for an older note of mine but all I get is this.

Do you have more specifics on the note?
Rough dates, rough keywords?
I'll throw it in my bench tester and see if I can find it. Will be a good test.
Yeah I do. I remember things I've said just not when. I found it!
I just had an idea for a work-around:
If you use 'citrine' as a local back-up relay, every event can be downloaded.
The problem here is, that I don't know how to search in long lists of events. Or if there are event IDs which I could copy (to use in a client, for example).