Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 23.  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)
 09/24/2025   22:34:35   (   0.02,-137.01) (  -0.10,-137.69)   77.05                80
 09/25/2025   22:18:29   (   0.02,-137.01) (   0.91,-133.16)  439.59                80
 09/27/2025   10:40:16   (  -0.02,-136.99) (   0.30,-138.42)  161.89                80
 09/28/2025   10:18:50   (  -0.02,-136.99) (  -0.72,-133.88)  354.15                80
 09/29/2025   22:43:25   (   0.01,-136.98) (  -0.49,-139.17)  250.14                80
 09/30/2025   22:21:59   (   0.02,-136.97) (   0.53,-134.64)  265.46                80
 10/02/2025   10:46:25   (  -0.01,-136.94) (   0.66,-139.90)  337.25                80
 10/03/2025   10:25:00   (  -0.02,-136.93) (  -0.36,-135.37)  178.03                80
 10/04/2025   22:49:34   (   0.02,-136.91) (  -0.83,-140.66)  427.26                80
 10/05/2025   22:28:09   (   0.02,-136.90) (   0.20,-136.13)   87.90                80