Twice a year, on 02/02 and 11/11, the reflection of the Roseta is perfectly aligned with the one on the opposite wall, creating the illusion of the number 8. You can find more information about this phenomenon here.
The first time I went, a big cloud appeared just before it was supposed to happen so I couldn’t see it. This year I didn’t believe it would happen as the day was not a sunny one but, miracle, just for 30 minutes, the sun was shining and we were able to witness the light show.
It was truly magical, the reflection of the lights on the wall of the cathedral made me feel so happy and lucky to be able to see such beauty.
Doors of the Cathedral open at 7.30am and this happens between 8am and 9am.