Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 4 24.  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)
 04/25/2023   10:48:15   (   0.00,-136.97) (   0.94,-141.22)  483.57                80
 04/26/2023   10:32:08   (   0.00,-136.96) (  -0.04,-136.67)   32.59                80
 04/28/2023   22:32:34   (  -0.00,-136.92) (  -0.12,-137.43)   58.26                80
 04/29/2023   22:16:26   (  -0.00,-136.90) (   0.88,-132.88)  457.60                80
 05/01/2023   10:35:30   (  -0.00,-136.89) (   0.26,-138.15)  142.61                80
 05/02/2023   10:19:23   (   0.00,-136.87) (  -0.75,-133.60)  373.11                80
 05/03/2023   22:38:34   (  -0.00,-136.83) (  -0.48,-138.88)  234.18                80
 05/04/2023   22:22:27   (   0.00,-136.81) (   0.54,-134.34)  281.12                80
 05/06/2023   10:41:30   (  -0.00,-136.79) (   0.63,-139.60)  320.38                80
 05/07/2023   10:25:23   (  -0.01,-136.76) (  -0.40,-135.06)  194.22                80