Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 4 7.  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)
 04/08/2025   18:39:14   (   0.05, -75.48) (  -0.70, -78.75)  372.93                80
 04/09/2025   18:23:09   (   0.05, -75.49) (   0.35, -74.22)  144.77                80
 04/11/2025   06:44:54   (  -0.04, -75.51) (   0.83, -79.48)  452.10                80
 04/12/2025   06:23:27   (  -0.05, -75.52) (  -0.16, -74.94)   65.73                80
 04/14/2025   18:26:35   (   0.05, -75.53) (   0.00, -75.70)   19.17                80
 04/15/2025   18:10:29   (   0.05, -75.55) (   1.01, -71.16)  499.17                80
 04/17/2025   06:32:14   (  -0.04, -75.58) (   0.17, -76.42)   96.88                80
 04/18/2025   06:10:49   (  -0.04, -75.59) (  -0.89, -71.90)  421.46                80
 04/19/2025   18:32:41   (   0.03, -75.59) (  -0.35, -77.18)  181.01                80
 04/20/2025   18:16:34   (   0.03, -75.61) (   0.67, -72.64)  337.88                80