Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 7 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)
 07/18/2021   10:40:11   (   0.04,-137.21) (   0.33,-138.51)  148.42                80
 07/19/2021   10:18:47   (   0.03,-137.21) (  -0.69,-133.98)  367.71                80
 07/20/2021   22:43:23   (  -0.03,-137.20) (  -0.49,-139.29)  237.57                80
 07/21/2021   22:21:58   (  -0.02,-137.20) (   0.53,-134.76)  278.06                80
 07/23/2021   10:46:26   (   0.02,-137.19) (   0.68,-140.03)  323.71                80
 07/24/2021   10:25:01   (   0.01,-137.18) (  -0.34,-135.50)  191.70                80
 07/25/2021   22:46:58   (  -0.02,-137.17) (  -0.84,-140.80)  414.22                80
 07/26/2021   22:30:53   (  -0.02,-137.16) (   0.18,-136.27)  101.47                80
 07/29/2021   10:31:16   (   0.03,-137.14) (   0.00,-137.01)   15.05                80
 07/31/2021   22:34:28   (  -0.02,-137.11) (  -0.16,-137.79)   76.69                80