Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 4 20.  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)
 04/20/2021   22:49:21   (   0.02,-137.20) (  -0.72,-140.66)  393.76                80
 04/21/2021   22:27:57   (   0.02,-137.20) (   0.28,-136.13)  122.46                80
 04/23/2021   10:52:25   (  -0.02,-137.20) (   0.91,-141.40)  478.00                80
 04/24/2021   10:31:00   (  -0.02,-137.20) (  -0.09,-136.87)   37.78                80
 04/26/2021   22:36:53   (   0.02,-137.18) (  -0.08,-137.65)   53.08                80
 04/27/2021   22:18:09   (   0.02,-137.18) (   0.92,-133.12)  462.08                80
 04/29/2021   10:39:57   (  -0.02,-137.16) (   0.26,-138.39)  140.11                80
 04/30/2021   10:18:33   (  -0.02,-137.15) (  -0.74,-133.86)  374.51                80
 05/01/2021   22:40:30   (   0.01,-137.12) (  -0.43,-139.17)  233.56                80
 05/02/2021   22:24:25   (   0.01,-137.10) (   0.57,-134.64)  280.86                80