Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 9 12.  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)
 09/12/2021   22:30:46   (  -0.05,-137.19) (   0.13,-136.26)  105.05                80
 09/14/2021   10:49:53   (   0.04,-137.19) (   1.04,-141.53)  496.16                80
 09/15/2021   10:33:49   (   0.04,-137.18) (   0.00,-137.01)   19.13                80
 09/17/2021   22:34:20   (  -0.02,-137.14) (  -0.19,-137.77)   73.04                80
 09/18/2021   22:18:15   (  -0.02,-137.13) (   0.84,-133.25)  442.21                80
 09/20/2021   10:37:22   (   0.01,-137.12) (   0.33,-138.52)  159.52                80
 09/21/2021   10:21:17   (   0.02,-137.11) (  -0.65,-133.98)  355.67                80
 09/22/2021   22:40:33   (  -0.02,-137.08) (  -0.51,-139.29)  251.78                80
 09/23/2021   22:24:29   (  -0.02,-137.06) (   0.53,-134.76)  263.17                80
 09/25/2021   10:43:35   (   0.02,-137.04) (   0.70,-140.02)  339.39                80