Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 13.  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)
 07/14/2023   18:25:13   (   0.02, -75.21) (  -0.10, -75.70)   56.30                80
 07/15/2023   18:09:08   (   0.01, -75.21) (   0.91, -71.17)  460.68                80
 07/17/2023   06:30:54   (  -0.01, -75.21) (   0.28, -76.43)  139.32                80
 07/18/2023   06:09:29   (  -0.01, -75.22) (  -0.73, -71.90)  378.08                80
 07/19/2023   18:31:24   (   0.01, -75.24) (  -0.44, -77.20)  223.99                80
 07/20/2023   18:15:18   (   0.01, -75.25) (   0.58, -72.67)  293.95                80
 07/22/2023   06:37:05   (  -0.01, -75.26) (   0.61, -77.93)  304.58                80
 07/23/2023   06:15:39   (  -0.01, -75.28) (  -0.41, -73.40)  213.80                80
 07/24/2023   18:37:35   (   0.01, -75.31) (  -0.75, -78.71)  386.99                80
 07/25/2023   18:21:29   (   0.01, -75.33) (   0.27, -74.17)  131.62                80
 07/27/2023   06:43:15   (  -0.01, -75.35) (   0.91, -79.44)  466.12                80