Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 4 18.  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)
 04/18/2025   18:54:22   (   0.05, -79.41) (  -0.50, -81.90)  284.08                80
 04/19/2025   18:32:57   (   0.05, -79.90) (   0.63, -77.39)  286.74                80
 04/21/2025   06:57:25   (  -0.04, -80.65) (   0.43, -82.68)  231.36                80
 04/22/2025   06:36:00   (  -0.04, -81.15) (  -0.70, -78.17)  339.67                80
 04/23/2025   19:00:37   (   0.03, -81.93) (  -0.30, -83.50)  178.36                80
 04/24/2025   18:39:11   (   0.03, -82.43) (   0.78, -78.98)  393.19                80
 04/26/2025   07:03:39   (  -0.03, -83.19) (   0.21, -84.28)  123.92                80
 04/27/2025   06:42:15   (  -0.03, -83.69) (  -0.93, -79.77)  447.56                80
 04/28/2025   19:06:50   (   0.03, -84.47) (  -0.10, -85.09)   70.07                80
 05/01/2025   07:09:53   (  -0.03, -85.73) (  -0.00, -85.87)   15.16                80