Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 19.  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)
 06/20/2025   22:34:38   (   0.02,-137.01) (  -0.12,-137.71)   79.70                80
 06/21/2025   22:18:33   (   0.02,-137.01) (   0.87,-133.18)  436.12                80
 06/23/2025   10:40:22   (  -0.02,-136.99) (   0.30,-138.45)  166.36                80
 06/24/2025   10:21:37   (  -0.02,-136.98) (  -0.70,-133.92)  348.87                80
 06/25/2025   22:40:54   (   0.02,-136.97) (  -0.51,-139.22)  257.12                80
 06/26/2025   22:24:51   (   0.02,-136.96) (   0.54,-134.70)  258.04                80
 06/28/2025   10:43:58   (  -0.01,-136.94) (   0.67,-139.96)  345.01                80
 06/29/2025   10:27:54   (  -0.00,-136.93) (  -0.32,-135.43)  170.20                80
 06/30/2025   22:47:11   (  -0.00,-136.92) (  -0.88,-140.74)  435.89                80
 07/01/2025   22:31:07   (  -0.01,-136.91) (   0.12,-136.21)   79.19                80