Parmandur
Book-Friend, he/him
No problem. It is worth noting that, as TiwazTyrsfist said, the canonical date is probably somewhere between 1487 DR and 1495 DR ish. But that raises some weird lore questions that WotC has been reticent to try and answer, so for the most part they seem to be keeping such things pretty lowkey.
Some time ago, somebody asked Chris Perkins a similar question on Twitter, and he directed them to whichever previous edition setting book on the DMs Guild they prefer.
The metaplot is dead, even as the multiverse metasetting lives. All of the adventures are as useable in the 1E Realms as the 4E Realms, and they can happen in any order the DM prefers.