Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 7 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)
 07/18/2025   20:29:19   (   0.01,-104.73) (   0.00,-106.07)  149.04                 0
 07/19/2025   20:11:50   (   0.01,-104.73) (   0.71,-101.47)  370.61                80
 07/21/2025   08:33:38   (  -0.01,-104.71) (   0.42,-106.75)  231.73                80
 07/22/2025   08:12:13   (  -0.01,-104.71) (  -0.58,-102.22)  284.35                80
 07/23/2025   20:34:11   (   0.01,-104.72) (  -0.60,-107.53)  319.10                80
 07/24/2025   20:18:06   (   0.01,-104.73) (   0.42,-103.00)  197.36                80
 07/26/2025   08:39:53   (  -0.01,-104.72) (   0.78,-108.26)  404.18                80
 07/27/2025   08:18:29   (  -0.01,-104.72) (  -0.23,-103.73)  112.47                80
 07/28/2025   20:40:26   (   0.01,-104.74) (  -0.94,-109.04)  490.21                80
 07/29/2025   20:24:22   (   0.01,-104.74) (   0.08,-104.51)   26.90                80
 08/01/2025   08:27:25   (  -0.01,-104.75) (   0.12,-105.25)   57.21                80