Correction: re 12 times of lighting candles :

Thanks to Rabbi E. Reingold Shlita who wrote

that #7 was wrong and the correct time should

be 73.125 minutes after Shekia.

If a Mil is 22.5 minutes then Tzeis would be

4x 22.5 = 90 minutes after Shekia

90 -22.5 x.75   = 2nd Shekia

90 - 16.875 = 73.125 = 2nd Shekia

R. E. Reingold suggested an additional zman

of Chatzos (Midnight)

(see Magen Avraham #672 who quotes a

Maharshal  עד חצות