Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 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)
 09/18/2025   08:27:15   (  -0.11,-104.66) (  -0.00,-105.21)   63.01                80
 09/19/2025   08:05:49   (  -0.12,-104.66) (  -1.01,-100.67)  453.83                80
 09/20/2025   20:27:45   (   0.11,-104.68) (  -0.15,-105.98)  147.30                80
 09/21/2025   20:11:39   (   0.11,-104.69) (   0.85,-101.44)  370.20                80
 09/23/2025   08:33:26   (  -0.11,-104.68) (   0.32,-106.71)  230.27                80
 09/24/2025   08:12:01   (  -0.11,-104.69) (  -0.68,-102.17)  286.81                80
 09/25/2025   20:33:55   (   0.11,-104.71) (  -0.53,-107.46)  314.93                80
 09/26/2025   20:17:51   (   0.11,-104.71) (   0.53,-102.94)  202.37                80
 09/28/2025   08:39:37   (  -0.11,-104.71) (   0.69,-108.20)  397.82                80
 09/29/2025   08:18:13   (  -0.12,-104.71) (  -0.38,-103.67)  118.91                80
 09/30/2025   20:40:07   (   0.11,-104.72) (  -0.84,-108.96)  483.87                80
 10/01/2025   20:24:01   (   0.12,-104.72) (   0.17,-104.43)   33.24                80