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Sun Transit Spring Season February 27 – March 7


Sun Transit Spring Season February 27 – March 7

  • By Paul - Web Administrator
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Please be advised that we are approaching the Spring Sun Transit season for 2018, which will occur between the dates of February 27 – March 7, 2018.


Sun transits occur when the sun crosses the earth’s equatorial plane during the spring and fall equinoxes (late February or early March; September or October). At these times, the sun aligns directly behind the satellites for a few minutes each day. When the sun moves directly behind the satellite the satellite signal can be overwhelmed by the enormous amount of thermally generated radio frequency (RF) noise radiated by the sun. This can cause reception interference for a few minutes every day during this occurrence.

Sun Transit


The time of occurrence depends both on the geographic location of the earth station and the location of the satellite. The sun may degrade the signal for several minutes depending on the antenna size and available link margin, although it is not unusual for the effect to go unnoticed.


Please feel free to reference the following websites for further information on sun transit: