Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 15.  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)
 05/16/2025   10:52:23   (  -0.01,-137.00) (   0.94,-141.35)  496.19                80
 05/17/2025   10:33:39   (   0.00,-136.99) (  -0.03,-136.82)   19.67                80
 05/19/2025   22:34:13   (  -0.01,-136.98) (  -0.15,-137.60)   70.25                80
 05/20/2025   22:18:09   (  -0.02,-136.97) (   0.88,-133.07)  445.02                80
 05/22/2025   10:37:19   (   0.02,-136.96) (   0.32,-138.35)  158.44                80
 05/23/2025   10:21:15   (   0.02,-136.95) (  -0.70,-133.82)  356.36                80
 05/24/2025   22:40:32   (  -0.01,-136.93) (  -0.49,-139.13)  250.67                80
 05/25/2025   22:24:28   (  -0.01,-136.91) (   0.48,-134.59)  263.52                80
 05/27/2025   10:43:38   (  -0.00,-136.88) (   0.65,-139.88)  341.66                80
 05/28/2025   10:27:34   (  -0.00,-136.86) (  -0.33,-135.35)  172.09                80