Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 4 20.  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)
 04/21/2025   06:57:25   (  -0.04, -80.66) (   0.39, -82.69)  230.87                80
 04/22/2025   06:36:01   (  -0.04, -81.15) (  -0.74, -78.17)  340.37                80
 04/23/2025   19:00:36   (   0.03, -81.94) (  -0.32, -83.49)  177.11                80
 04/24/2025   18:39:12   (   0.04, -82.44) (   0.82, -78.98)  394.59                80
 04/26/2025   07:03:39   (  -0.03, -83.20) (   0.23, -84.27)  122.45                80
 04/27/2025   06:42:15   (  -0.04, -83.70) (  -0.91, -79.76)  449.24                80
 04/28/2025   19:06:51   (   0.03, -84.49) (  -0.07, -85.10)   67.94                80
 05/01/2025   07:09:54   (  -0.03, -85.76) (  -0.02, -85.87)   12.89                80
 05/03/2025   19:10:24   (   0.02, -87.06) (   0.10, -86.68)   42.90                80