Even late at night, residents can bekeptawake by a nearby restaurant's loud pet goose, supermarket or restaurants' ventilation fans and freezers, temples or businesses setting off firecrackers to seek divine protection at ungodly but auspicious hours.
It forestalls impatient souls, upset at the prospect of missed connections and lost hotel bookings, being kept fretfully awake when they would be far better off dozing away such temporal qualms.