Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 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)
 06/24/2025   10:21:38   (  -0.02,-137.00) (  -0.73,-133.92)  350.91                80
 06/25/2025   22:40:55   (   0.02,-137.01) (  -0.48,-139.23)  253.33                80
 06/26/2025   22:24:50   (   0.01,-137.01) (   0.51,-134.70)  262.97                80
 06/28/2025   10:43:59   (  -0.01,-137.00) (   0.65,-139.97)  338.28                80
 06/29/2025   10:27:54   (   0.00,-137.00) (  -0.35,-135.44)  178.06                80
 06/30/2025   22:47:12   (  -0.00,-137.01) (  -0.86,-140.74)  426.33                80
 07/01/2025   22:31:08   (  -0.01,-137.00) (   0.19,-136.22)   89.85                80
 07/04/2025   10:31:31   (   0.01,-136.99) (   0.02,-136.95)    4.40                80
 07/06/2025   22:34:45   (   0.00,-136.97) (  -0.17,-137.74)   87.13                80