Indonesia is a country which the majority of its citizen are Moslems. Every year they celebrate Idul Fitri. This celebration begins with Solat Ied early in the morning. This tradition also happens in Bandung city. At this moment, it seems like every activities such as transportation, consumption and production at every places in this city are stopped. Like a dead city, even it happens for just 3 hours, but this is the best moment for the environment to breath freely without pollution.