Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 22.  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)
 09/23/2025   08:33:26   (  -0.10,-104.68) (   0.33,-106.71)  230.16                80
 09/24/2025   08:12:01   (  -0.10,-104.68) (  -0.68,-102.17)  286.79                80
 09/25/2025   20:33:55   (   0.10,-104.70) (  -0.54,-107.46)  315.41                80
 09/26/2025   20:17:50   (   0.10,-104.70) (   0.47,-102.92)  201.76                80
 09/28/2025   08:39:37   (  -0.10,-104.70) (   0.68,-108.20)  398.40                80
 09/29/2025   08:18:11   (  -0.10,-104.70) (  -0.33,-103.66)  118.17                80
 09/30/2025   20:40:06   (   0.10,-104.70) (  -0.88,-108.95)  484.99                80
 10/01/2025   20:24:01   (   0.11,-104.70) (   0.20,-104.43)   32.13                80
 10/04/2025   08:27:02   (  -0.11,-104.71) (  -0.02,-105.16)   50.64                80
 10/05/2025   08:05:37   (  -0.11,-104.71) (  -1.04,-100.62)  466.15                80