The Pokémon GO Celestial Research Day event took place on December 20 from 2 p.m. to 5 p.m. local time and focused on Lunatone and Solrock encounters through themed Field Research tasks. Players can also pick up paid Timed Research for extra chances at the featured Pokémon along with bonus tasks and added rewards. It’s a short window but a solid opportunity for collectors or anyone chasing better IVs. With concentrated spawns and clear research goals, this mini event should make the hunt feel quick and efficient, so trainers may want to set aside the afternoon to make the most of it.
Source: Official Pokémon GO blog and Pokemon.com