Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 4 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)
 04/17/2025   22:33:52   (  -0.00,-137.00) (  -0.10,-137.51)   57.39                80
 04/18/2025   22:17:45   (   0.00,-136.99) (   0.91,-132.97)  459.19                80
 04/20/2025   10:39:31   (  -0.00,-136.98) (   0.27,-138.23)  142.31                80
 04/21/2025   10:18:04   (  -0.00,-136.97) (  -0.74,-133.69)  373.89                80
 04/22/2025   22:39:57   (  -0.00,-136.96) (  -0.43,-138.98)  230.11                80
 04/23/2025   22:23:50   (  -0.00,-136.95) (   0.53,-134.43)  285.98                80
 04/25/2025   10:45:35   (   0.00,-136.92) (   0.64,-139.69)  316.28                80
 04/26/2025   10:24:09   (  -0.00,-136.91) (  -0.39,-135.16)  199.33                80
 04/27/2025   22:46:02   (   0.01,-136.89) (  -0.76,-140.45)  405.94                80
 04/28/2025   22:29:55   (   0.01,-136.87) (   0.21,-135.90)  109.05                80
 04/30/2025   10:49:00   (  -0.02,-136.83) (   0.96,-141.17)  494.97                80
 05/01/2025   10:32:54   (  -0.02,-136.80) (  -0.08,-136.63)   19.72                80