Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 25.  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)
 05/25/2025   22:23:01   (   0.01,-137.00) (   0.53,-134.60)  272.89                 8
 05/27/2025   10:43:38   (  -0.01,-136.98) (   0.66,-139.88)  330.35                80
 05/28/2025   10:27:35   (  -0.02,-136.98) (  -0.37,-135.35)  184.60                80
 05/29/2025   22:46:52   (   0.02,-136.97) (  -0.82,-140.66)  421.58                80
 05/30/2025   22:30:48   (   0.02,-136.95) (   0.21,-136.14)   93.24                80
 06/02/2025   10:33:53   (  -0.02,-136.92) (  -0.01,-136.88)    5.02                80
 06/04/2025   22:34:27   (   0.02,-136.90) (  -0.15,-137.66)   87.19                80
 06/05/2025   22:18:24   (   0.02,-136.88) (   0.88,-133.14)  427.31                80
 06/07/2025   10:37:32   (  -0.03,-136.85) (   0.34,-138.41)  177.15                80
 06/08/2025   10:21:28   (  -0.03,-136.84) (  -0.70,-133.88)  336.85                80