Hiya … you didn’t mention what times you can actually do, as “late night” can mean different things to different people and, of course, also depends on your time zone 
We may be a bit early for you, but we raid Normal and Heroic raids twice a week (Wednesday & Friday) between 21.30 and midnight server time.
We are a social/casual raiding guild, accepting applications from people aged 18+. We have a good range of people from students, to people with families, jobs and responsibilities, to retirees. In game interests range from regular raiding to never raiding; concentrating on one or two characters or going for the max; Dungeons, M+; Expeditions; achievements; mount and pet collecting, etc.
If this sounds of interest you can read more about us on our realm post: