Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 4 1.  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)
 04/01/2025   22:34:16   (   0.00,-137.00) (  -0.11,-137.60)   67.03                80
 04/02/2025   22:18:10   (   0.00,-137.00) (   0.87,-133.05)  449.44                80
 04/04/2025   10:37:16   (   0.00,-136.99) (   0.27,-138.32)  151.48                80
 04/05/2025   10:21:10   (   0.00,-136.98) (  -0.71,-133.78)  364.69                80
 04/06/2025   22:40:24   (  -0.00,-136.97) (  -0.49,-139.07)  240.14                80
 04/07/2025   22:24:18   (  -0.00,-136.96) (   0.56,-134.54)  276.01                80
 04/09/2025   10:43:24   (   0.00,-136.95) (   0.64,-139.80)  325.15                80
 04/10/2025   10:27:17   (   0.00,-136.94) (  -0.35,-135.26)  190.92                80
 04/11/2025   22:46:32   (  -0.00,-136.93) (  -0.82,-140.56)  414.14                80
 04/12/2025   22:30:25   (   0.00,-136.92) (   0.17,-136.02)  101.66                80
 04/15/2025   10:33:25   (  -0.01,-136.88) (  -0.03,-136.75)   14.59                80