Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 04/17/2025   08:11:16   (  -0.03,-104.36) (  -0.57,-101.96)  274.32                80
 04/18/2025   20:33:09   (   0.02,-104.39) (  -0.62,-107.25)  325.56                80
 04/19/2025   20:17:03   (   0.02,-104.39) (   0.40,-102.71)  191.42                80
 04/21/2025   08:38:47   (  -0.01,-104.35) (   0.82,-107.96)  411.89                80
 04/22/2025   08:17:21   (  -0.01,-104.35) (  -0.21,-103.43)  104.87                80
 04/23/2025   20:39:14   (   0.00,-104.37) (  -0.95,-108.72)  495.20                80
 04/24/2025   20:23:07   (   0.01,-104.37) (   0.03,-104.17)   22.13                80
 04/27/2025   08:26:05   (  -0.01,-104.34) (   0.14,-104.89)   63.81                80
 04/28/2025   08:04:38   (  -0.01,-104.33) (  -0.90,-100.36)  452.92                80
 04/29/2025   20:26:30   (   0.01,-104.35) (  -0.27,-105.65)  147.62                80