Request a Copy of your Certificate of Naturalization. The Certificate of United States Naturalization Guide was developed to help naturalized U.S. citizens complete and file their own requests for a copy of their Certificate of Naturalization.
A polar day refers to a day when the sun does not set for 24 hours. This occurs because the top of the earth tilts toward the sun during one half of the year. Areas in the very northern and very southern parts of the globe are the only regions that experience both polar days and polar nights.
Polar Night is when none of the Sun's disc is visible above the horizon at all during 24 hours of the day.Northern lights during a Polar Night. Northern lights (aurora borealis), stars and the moon light up the otherwise dark Polar Nights in Northern Norway.Â©bigstockphoto.com/sdimitrov. The opposite of Polar Night is Midnight Sun or Polar Day. As the upper edge of the solar disc becomes visible above the horizon, it is sunrise and no longer Polar Night.Sunset is the moment the upper edge of the Sun disappears below the horizon.olar Night is when none of the Sun's disc is visible above the horizon at all during 24 hours of the day. Northern lights during a Polar Night.