Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 11 10.  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)
 11/11/2025   22:36:30   (   0.01,-137.00) (  -0.12,-137.46)   52.94                80
 11/12/2025   22:15:09   (   0.02,-137.00) (   0.95,-132.95)  462.77                80
 11/14/2025   10:39:39   (  -0.01,-137.00) (   0.25,-138.22)  139.29                80
 11/15/2025   10:18:17   (  -0.02,-137.00) (  -0.76,-133.70)  376.19                80
 11/16/2025   22:42:57   (   0.01,-137.00) (  -0.43,-139.01)  228.97                80
 11/17/2025   22:21:34   (   0.01,-137.00) (   0.59,-134.49)  286.40                80
 11/19/2025   10:46:04   (   0.00,-136.99) (   0.65,-139.75)  316.28                80
 11/20/2025   10:24:41   (   0.00,-136.98) (  -0.36,-135.23)  198.42                80
 11/21/2025   22:49:21   (  -0.01,-136.97) (  -0.81,-140.55)  408.38                80
 11/22/2025   22:27:59   (  -0.01,-136.96) (   0.21,-136.03)  105.90                80
 11/24/2025   10:52:28   (   0.01,-136.93) (   1.02,-141.30)  498.11                80