Does lunatone only appear at night

I've captured 3 and only met them at night :/

Yes which region are you in

Somewhere in the evening - night. Solrock for some weird reason seems to prefer evening-night too.

Now that you mention it, I haven't seen any and I'm only active on day

I haven't caught one yet, but I did see one on my nearby scanner during the day today (I'm in the us)

All 4 or 5 that I've seen were during the evening or at night. They're pretty rare regardless.

When we had them in the UK, they *spawned* until about 930 AM and lasted until about 1000 AM. You should see some if you check early enough in the morning.

ALSO, they tend to spawn near the same areas, regardless of nest changes, spawn points, AND EVEN stops. I got my first Lunatone and Solrock <150m away from each other, and both those points have spawned Solrock repeatedly - I actually stopped paying attention to Lunatone after a while. Until 2 weeks ago, there wasn't a stop within 200m of either of those points.