Ditloid Quiz

[jaykray]

151211 GSCS (I think this refers to the date 15th of december)
1974 GSMTE
1863 LUO
5 AIP
9 PIAD
1922 HACE
221111 SHAPC (again, this may refer to a date)
2 CQONGFAR
3 BM
6 POTSOD
2 WSCISEE

[jaykray]

3 BM is blind mice

[Calibax]

1863 London Underground opened

[johne1892]

6 Points On The Star Of David

[factor-fiction]

5 angles in pentagons?