Dish Network Solo 351 - Manual (Page 17)

Chapter 1
Page 12
Introduction
Solar Interference
Twice a year, the sun moves to a position behind the DISH Network satellite
as it orbits the Earth. The exact time of the year that this occurs varies,
depending on the location, but it is near the beginning of spring and again
near the beginning of autumn. The period of solar interference lasts for a few
minutes at about the same time everyday for a few days during the spring
and autumn, so do not be alarmed when it happens.
This is an unavoidable natural event for all television involving the use of
satellites and has an adverse effect on many program providers. During this
period, you will not be able to see programs on DISH Network. Once the sun
has moved from behind the satellite, the programs will reappear.