Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 18.  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)
 05/19/2025   22:34:13   (   0.01,-136.99) (  -0.15,-137.60)   70.13                80
 05/20/2025   22:18:09   (  -0.00,-136.98) (   0.87,-133.07)  445.49                80
 05/22/2025   10:37:18   (   0.00,-136.96) (   0.33,-138.35)  157.86                80
 05/23/2025   10:21:15   (  -0.00,-136.95) (  -0.70,-133.82)  356.97                80
 05/24/2025   22:40:32   (   0.02,-136.94) (  -0.49,-139.13)  249.69                80
 05/25/2025   22:24:29   (   0.02,-136.93) (   0.54,-134.61)  264.72                80
 05/27/2025   10:43:38   (  -0.02,-136.90) (   0.65,-139.88)  340.15                80
 05/28/2025   10:27:34   (  -0.01,-136.88) (  -0.33,-135.35)  173.84                80
 05/29/2025   22:46:51   (   0.01,-136.85) (  -0.86,-140.65)  433.97                80
 05/30/2025   22:30:47   (   0.01,-136.83) (   0.18,-136.13)   79.92                80