Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 7 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)
 07/18/2025   20:27:54   (   0.01,-104.73) (  -0.29,-106.01)  145.78                80
 07/19/2025   20:11:50   (   0.01,-104.73) (   0.72,-101.47)  370.51                80
 07/21/2025   08:33:38   (  -0.01,-104.71) (   0.42,-106.75)  231.72                80
 07/22/2025   08:12:13   (  -0.01,-104.71) (  -0.59,-102.22)  284.36                80
 07/23/2025   20:34:11   (   0.01,-104.72) (  -0.59,-107.53)  319.29                80
 07/24/2025   20:18:06   (   0.01,-104.72) (   0.42,-103.00)  197.18                80
 07/26/2025   08:39:54   (  -0.01,-104.72) (   0.78,-108.26)  404.22                80
 07/27/2025   08:18:29   (  -0.01,-104.72) (  -0.23,-103.73)  112.43                80
 07/28/2025   20:40:26   (   0.01,-104.74) (  -0.93,-109.04)  490.42                80
 07/29/2025   20:24:22   (   0.00,-104.74) (   0.08,-104.51)   26.76                80