Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 17.  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) (   0.01,-105.21)   62.97                80
 09/19/2025   08:05:49   (  -0.11,-104.66) (  -0.99,-100.67)  453.87                80
 09/20/2025   20:27:44   (   0.11,-104.68) (  -0.17,-105.97)  147.26                80
 09/21/2025   20:11:39   (   0.11,-104.69) (   0.83,-101.44)  370.24                80
 09/23/2025   08:33:26   (  -0.11,-104.69) (   0.34,-106.71)  230.18                80
 09/24/2025   08:12:01   (  -0.11,-104.69) (  -0.66,-102.17)  286.91                80
 09/25/2025   20:33:56   (   0.11,-104.71) (  -0.49,-107.47)  314.82                80
 09/26/2025   20:17:51   (   0.11,-104.71) (   0.51,-102.94)  202.48                80
 09/28/2025   08:39:38   (  -0.11,-104.71) (   0.65,-108.21)  397.67                80
 09/29/2025   08:18:12   (  -0.12,-104.71) (  -0.36,-103.67)  119.05                80
 09/30/2025   20:40:07   (   0.11,-104.72) (  -0.85,-108.96)  483.70                80
 10/01/2025   20:24:02   (   0.12,-104.73) (   0.21,-104.44)   33.55                80