Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 9 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)
 09/18/2021   22:18:15   (  -0.03,-137.19) (   0.85,-133.25)  449.54                80
 09/20/2021   10:37:22   (   0.03,-137.19) (   0.32,-138.52)  150.64                80
 09/21/2021   10:21:17   (   0.03,-137.19) (  -0.66,-133.98)  365.48                80
 09/22/2021   22:40:33   (  -0.03,-137.18) (  -0.51,-139.28)  240.68                80
 09/23/2021   22:24:29   (  -0.03,-137.17) (   0.53,-134.76)  275.20                80
 09/25/2021   10:43:36   (   0.03,-137.16) (   0.64,-140.03)  325.78                80
 09/26/2021   10:27:31   (   0.03,-137.15) (  -0.34,-135.49)  189.55                80
 09/27/2021   22:46:47   (  -0.02,-137.12) (  -0.82,-140.80)  418.10                80
 09/28/2021   22:30:41   (  -0.02,-137.11) (   0.16,-136.26)   96.71                80
 10/01/2021   10:33:44   (   0.01,-137.07) (  -0.03,-137.00)    9.10                80