Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 12 18.  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)
 12/19/2021   10:48:56   (  -0.01,-137.20) (   0.90,-141.28)  464.43                80
 12/20/2021   10:32:51   (  -0.00,-137.20) (  -0.12,-136.74)   52.10                80
 12/22/2021   22:33:20   (  -0.00,-137.17) (  -0.08,-137.50)   37.11                80
 12/23/2021   22:17:14   (  -0.00,-137.17) (   0.94,-132.96)  478.95                80
 12/25/2021   10:38:00   (  -0.00,-137.16) (   0.24,-138.22)  121.76                19
 12/26/2021   10:17:35   (  -0.00,-137.14) (  -0.79,-133.69)  393.91                80
 12/27/2021   22:39:29   (   0.00,-137.12) (  -0.43,-138.98)  212.75                80
 12/28/2021   22:23:24   (  -0.00,-137.10) (   0.60,-134.45)  302.64                80
 12/30/2021   10:45:10   (   0.00,-137.08) (   0.58,-139.71)  299.12                80
 12/31/2021   10:23:44   (   0.01,-137.06) (  -0.39,-135.16)  215.53                80