LAHORE-Like elsewhere in the City, Earth Hour was also observed at Punjab Assembly on Saturday night when all lights in the assembly building were switched off between 8:30 pm to 9:30 pm. A good number of assembly members and representatives of civil society gathered outside the assembly and lit candles in the ceremony. PA Deputy Speaker Rana Mashhood, who was chief guest on the occasion, said though the switching off of lights for one hour was symbolic in nature, but it would help in inculcating a habit among the people to preserve energy.