Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 9 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-20 Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2021   10:49:54   (   0.04,-137.21) (   1.00,-141.54)  493.68                80
 09/15/2021   10:31:08   (   0.04,-137.21) (   0.02,-137.00)   22.92                80
 09/17/2021   22:34:20   (  -0.02,-137.20) (  -0.15,-137.78)   66.82                80
 09/18/2021   22:18:16   (  -0.02,-137.20) (   0.89,-133.26)  449.51                80
 09/20/2021   10:37:23   (   0.02,-137.20) (   0.28,-138.53)  150.06                80
 09/21/2021   10:21:18   (   0.02,-137.20) (  -0.70,-133.99)  366.31                80
 09/22/2021   22:40:34   (  -0.02,-137.19) (  -0.47,-139.30)  239.76                80
 09/23/2021   22:24:28   (  -0.02,-137.18) (   0.51,-134.76)  276.33                80
 09/25/2021   10:43:36   (   0.02,-137.18) (   0.66,-140.03)  324.03                80
 09/26/2021   10:27:31   (   0.02,-137.17) (  -0.39,-135.50)  191.54                80
 09/27/2021   22:46:47   (  -0.01,-137.15) (  -0.83,-140.80)  415.99                80