Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-20
TLE Epoch: 2021 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-20 Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2021   21:46:17   (  -0.00,-127.90) (   0.63,-125.10)  319.71                80
 04/20/2021   10:08:05   (   0.01,-127.85) (   0.55,-130.37)  286.29                80
 04/21/2021   09:46:41   (   0.01,-127.81) (  -0.44,-125.84)  225.22                80
 04/22/2021   22:08:37   (  -0.02,-127.74) (  -0.79,-131.14)  387.03                80
 04/23/2021   21:52:33   (  -0.01,-127.71) (   0.21,-126.60)  125.02                80
 04/25/2021   10:14:21   (   0.02,-127.66) (   0.97,-131.88)  480.50                80
 04/26/2021   09:52:56   (   0.02,-127.62) (  -0.02,-127.35)   30.53                80
 04/28/2021   21:56:09   (  -0.01,-127.48) (  -0.15,-128.13)   72.90                80
 04/29/2021   21:40:05   (  -0.01,-127.44) (   0.85,-123.60)  438.15                80
 05/01/2021   10:01:53   (   0.02,-127.39) (   0.33,-128.87)  168.42                80