Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 15.  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)
 09/15/2025   20:24:12   (   0.12,-104.67) (   0.15,-104.47)   21.65                80
 09/18/2025   08:27:15   (  -0.12,-104.66) (  -0.03,-105.22)   63.25                80
 09/19/2025   08:05:50   (  -0.13,-104.66) (  -1.03,-100.68)  453.75                80
 09/20/2025   20:27:44   (   0.13,-104.68) (  -0.19,-105.97)  147.29                80
 09/21/2025   20:11:40   (   0.13,-104.69) (   0.87,-101.45)  370.34                80
 09/23/2025   08:33:27   (  -0.12,-104.69) (   0.30,-106.72)  229.92                80
 09/24/2025   08:12:01   (  -0.13,-104.70) (  -0.71,-102.18)  287.29                80
 09/25/2025   20:33:56   (   0.12,-104.72) (  -0.51,-107.47)  314.33                80
 09/26/2025   20:17:50   (   0.13,-104.72) (   0.50,-102.93)  203.10                80
 09/28/2025   08:39:38   (  -0.12,-104.72) (   0.66,-108.20)  396.87                80
 09/29/2025   08:18:12   (  -0.13,-104.72) (  -0.35,-103.67)  119.95                80