Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 10 12.  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)
 10/12/2023   20:21:37   (  -0.00,-104.69) (   0.09,-104.25)   49.67                80
 10/15/2023   08:24:38   (   0.00,-104.71) (   0.07,-104.98)   31.53                80
 10/16/2023   08:03:13   (   0.00,-104.70) (  -0.95,-100.45)  484.79                80
 10/17/2023   20:25:08   (  -0.00,-104.68) (  -0.22,-105.75)  122.21                80
 10/18/2023   20:09:02   (   0.00,-104.67) (   0.80,-101.22)  394.17                80
 10/20/2023   08:30:48   (  -0.00,-104.69) (   0.41,-106.48)  204.09                80
 10/21/2023   08:09:22   (   0.00,-104.68) (  -0.62,-101.94)  311.86                80
 10/22/2023   20:31:16   (   0.00,-104.64) (  -0.59,-107.24)  295.96                80
 10/23/2023   20:15:11   (   0.00,-104.64) (   0.45,-102.71)  220.40                80
 10/25/2023   08:36:56   (  -0.00,-104.66) (   0.75,-107.96)  377.11                80