Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 07/17/2023   06:30:55   (  -0.01, -75.21) (   0.25, -76.44)  139.64                80
 07/18/2023   06:09:29   (  -0.01, -75.21) (  -0.76, -71.90)  377.61                80
 07/19/2023   18:31:24   (   0.01, -75.23) (  -0.41, -77.21)  224.53                80
 07/20/2023   18:15:19   (   0.01, -75.24) (   0.61, -72.67)  293.28                80
 07/22/2023   06:37:05   (  -0.01, -75.25) (   0.58, -77.94)  305.64                80
 07/23/2023   06:15:40   (  -0.01, -75.27) (  -0.44, -73.40)  212.54                80
 07/24/2023   18:37:34   (   0.01, -75.30) (  -0.78, -78.70)  388.33                80
 07/25/2023   18:18:49   (   0.00, -75.31) (   0.24, -74.17)  130.19                80
 07/27/2023   06:43:15   (  -0.00, -75.33) (   0.94, -79.43)  467.90                80
 07/28/2023   06:21:49   (   0.00, -75.35) (  -0.08, -74.90)   50.64                80