We are the human race and we are open 24 hours a day 7 days a week 365 days a year. Meaning we are always open. We are a people who do not really sleep someone out there will need something now. I always found it curious why humans shelter at night. Every animal on the planet knows how lethal the Sun is and comes out when sheltered from it's blinding and harmful rays. That inconvenience also prevents one from seeing their true surroundings the majestic view of our universe. And you use this time to sleep?