primal has a caching relay (so it is my guesstimate) that there is a delay from the actual data.  njump.me also is a bit of delay. the most up to date data i always see from nostr.band but that is also dependent on what relays are public, i'm not sure if covers some of these more private relays, you'd have to ask  @brugeman 

 that's ok Karrot, I will leave it as a mystery lol.