Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 6 23.  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)
 06/24/2025   08:39:42   (   0.01,-104.72) (   0.81,-108.21)  397.39                80
 06/25/2025   08:18:18   (   0.00,-104.72) (  -0.25,-103.69)  118.31                80
 06/26/2025   20:42:56   (  -0.00,-104.73) (  -0.96,-108.99)  486.10                80
 06/27/2025   20:21:32   (   0.00,-104.73) (   0.09,-104.47)   30.21                80
 06/30/2025   08:27:15   (   0.00,-104.73) (   0.13,-105.20)   54.66                80
 07/01/2025   08:05:51   (  -0.00,-104.73) (  -0.92,-100.68)  461.94                80
 07/02/2025   20:27:49   (  -0.00,-104.74) (  -0.28,-105.98)  141.49                80
 07/03/2025   20:11:44   (   0.00,-104.75) (   0.71,-101.45)  375.13                80
 07/05/2025   08:33:33   (  -0.01,-104.75) (   0.44,-106.73)  225.72                80
 07/06/2025   08:12:08   (  -0.01,-104.75) (  -0.55,-102.19)  290.70                80