nostr:npub1sweetvyurzytyvqthtk45x5hk4kvvat8t7r35ruc6tgc9ak8av9qrwwjk4 nostr:npub1wfvuzlcg08v2kz04pzed9jwpdv84rlxsd26eyy6q9m0ldn37swjq0hyfp8 nostr:npub19w22arm00lfx3u0d2lakh54nv9r9whe2p7hzljsyxcl434xp6pssc7rr2f nostr:npub1w6436t9t6rq3zxr3faxtapfgmvtj839v4pnfpfywxhyk8p7npwnq3cfg5w 
It's about future events, because "in that day" sounds like the day of the LORD, and the proceeding verse (10) matches Revelation 1:7.
Isaiah 13 likewise links the destruction of the armies of the nations to Christ's return (celestial blackout in verse 10)