You have 90 days from the date your passport was issued to report that you have not yet received it in the mail. If you do not report the non-receipt of your passport within 90 days of the issue date, you will be required to reapply and submit the full passport fee.
The best time of year to see the Northern Lights in Iceland is between the months of September and March. To be in with a really strong chance to witness the northern lights a cloudless, clear sky is the main requirement with the outside temperature being cold but dry.
Under normal circumstances, the northern lights occur in a narrow band around 10 to 20 degrees of latitude from the North Pole. In North America, this restricts their range to parts of Alaska, northwest Canada and Greenland. In Europe, Norway and parts of Siberia also experience the northern lights on occasion. However, changes in the Earth's geomagnetic field and solar activity can alter the range and activity of the aurorae.