Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 4 14.  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)
 04/15/2025   10:30:44   (   0.00,-137.00) (  -0.05,-136.75)   28.76                80
 04/17/2025   22:33:52   (  -0.00,-137.00) (  -0.08,-137.51)   57.80                80
 04/18/2025   22:17:46   (   0.00,-136.99) (   0.93,-132.97)  458.80                80
 04/20/2025   10:39:30   (   0.00,-136.97) (   0.31,-138.22)  142.53                80
 04/21/2025   10:18:04   (   0.00,-136.96) (  -0.70,-133.68)  373.70                80
 04/22/2025   22:39:57   (  -0.01,-136.95) (  -0.47,-138.97)  230.63                80
 04/23/2025   22:23:50   (  -0.00,-136.94) (   0.55,-134.44)  285.34                80
 04/25/2025   10:45:36   (   0.00,-136.92) (   0.62,-139.70)  316.75                80
 04/26/2025   10:24:09   (   0.00,-136.90) (  -0.40,-135.16)  198.75                80
 04/27/2025   22:46:01   (   0.01,-136.88) (  -0.81,-140.44)  406.90                80