Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 09/18/2025   22:47:08   (   0.02,-137.01) (  -0.81,-140.73)  423.82                80
 09/19/2025   22:31:03   (   0.01,-137.01) (   0.19,-136.19)   93.21                80
 09/22/2025   10:31:25   (  -0.01,-137.00) (  -0.02,-136.92)    8.69                80
 09/24/2025   22:34:34   (   0.00,-137.00) (  -0.14,-137.69)   77.63                80
 09/25/2025   22:18:29   (  -0.01,-137.00) (   0.87,-133.15)  438.80                80
 09/27/2025   10:40:15   (   0.02,-136.97) (   0.35,-138.41)  163.80                80
 09/28/2025   10:18:50   (   0.01,-136.96) (  -0.65,-133.87)  351.66                80
 09/29/2025   22:40:45   (  -0.01,-136.95) (  -0.50,-139.18)  253.00                80
 09/30/2025   22:24:40   (  -0.01,-136.94) (   0.51,-134.64)  262.12                80