Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 17.  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)
 09/17/2023   18:08:45   (  -0.06, -75.22) (   0.84, -71.13)  465.78                80
 09/19/2023   06:30:33   (   0.06, -75.22) (   0.31, -76.41)  134.87                80
 09/20/2023   06:09:09   (   0.06, -75.23) (  -0.71, -71.88)  382.00                80
 09/21/2023   18:31:05   (  -0.05, -75.24) (  -0.49, -77.18)  221.32                80
 09/22/2023   18:15:01   (  -0.05, -75.25) (   0.53, -72.66)  295.56                80
 09/24/2023   06:36:48   (   0.04, -75.25) (   0.66, -77.92)  304.93                80
 09/25/2023   06:15:23   (   0.04, -75.26) (  -0.36, -73.40)  212.14                80
 09/26/2023   18:37:21   (  -0.03, -75.28) (  -0.77, -78.71)  390.57                80
 09/27/2023   18:21:15   (  -0.03, -75.29) (   0.20, -74.17)  127.22                80
 09/29/2023   06:43:03   (   0.02, -75.31) (   0.93, -79.45)  471.43                80
 09/30/2023   06:21:38   (   0.03, -75.33) (  -0.04, -74.91)   46.88                80