Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 4 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)
 04/14/2025   18:26:38   (   0.05, -76.33) (   0.15, -75.73)   67.17                80
 04/17/2025   06:29:39   (  -0.05, -76.78) (  -0.10, -76.48)   33.24                80
 04/19/2025   18:35:27   (   0.04, -77.21) (   0.03, -77.26)    4.98                80
 04/22/2025   06:38:27   (  -0.03, -77.67) (   0.07, -77.99)   37.38                80
 04/23/2025   06:17:02   (  -0.03, -77.85) (  -1.01, -73.47)  499.37                80
 04/24/2025   18:41:36   (   0.02, -78.13) (  -0.09, -78.78)   73.85                80
 04/25/2025   18:20:10   (   0.03, -78.31) (   0.93, -74.24)  463.39                80
 04/27/2025   06:44:36   (  -0.02, -78.60) (   0.18, -79.52)  104.37                80