Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2023   08:25:35   (  -0.00,-104.69) (   0.13,-105.20)   58.99                80
 12/19/2023   08:04:11   (  -0.01,-104.69) (  -0.89,-100.67)  457.40                80
 12/20/2023   20:26:07   (   0.02,-104.67) (  -0.30,-105.97)  149.27                80
 12/21/2023   20:10:03   (   0.02,-104.67) (   0.72,-101.44)  367.69                80
 12/23/2023   08:31:51   (   0.01,-104.71) (   0.44,-106.72)  228.62                80
 12/24/2023   08:10:26   (   0.02,-104.71) (  -0.52,-102.17)  288.27                80
 12/25/2023   20:32:22   (  -0.02,-104.68) (  -0.65,-107.48)  318.77                80
 12/26/2023   20:16:17   (  -0.02,-104.69) (   0.37,-102.95)  197.97                80
 12/28/2023   08:38:06   (   0.01,-104.72) (   0.78,-108.22)  398.74                80
 12/29/2023   08:16:41   (   0.01,-104.72) (  -0.25,-103.70)  117.92                80
 12/30/2023   20:38:37   (  -0.00,-104.70) (  -0.97,-108.99)  489.05                80