Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 11 16.  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)
 11/17/2023   08:03:54   (   0.00,-104.68) (  -0.92,-100.62)  462.35                80
 11/18/2023   20:25:52   (   0.00,-104.65) (  -0.31,-105.92)  145.97                80
 11/19/2023   20:09:48   (   0.01,-104.65) (   0.72,-101.40)  369.82                80
 11/21/2023   08:31:37   (  -0.01,-104.68) (   0.46,-106.68)  228.44                80
 11/22/2023   08:10:14   (  -0.01,-104.67) (  -0.57,-102.15)  287.41                80
 11/23/2023   20:32:11   (   0.00,-104.65) (  -0.64,-107.46)  320.36                80
 11/24/2023   20:16:08   (   0.00,-104.65) (   0.39,-102.93)  195.90                80
 11/26/2023   08:37:57   (   0.01,-104.68) (   0.78,-108.21)  401.53                80
 11/27/2023   08:16:33   (   0.01,-104.68) (  -0.20,-103.67)  114.40                80
 11/28/2023   20:41:10   (  -0.02,-104.65) (  -1.00,-108.98)  493.81                80
 11/29/2023   20:19:46   (  -0.01,-104.65) (   0.04,-104.46)   22.23                80