Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 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)
 10/15/2025   22:40:25   (   0.02,-137.00) (  -0.46,-139.08)  237.34                80
 10/16/2025   22:24:20   (   0.02,-137.00) (   0.59,-134.55)  279.95                80
 10/18/2025   10:46:05   (  -0.02,-137.00) (   0.59,-139.81)  320.25                80
 10/19/2025   10:24:39   (  -0.02,-137.00) (  -0.41,-135.27)  196.91                80
 10/20/2025   22:46:32   (  -0.02,-137.00) (  -0.83,-140.55)  404.61                80
 10/21/2025   22:30:26   (  -0.02,-137.00) (   0.22,-136.02)  112.38                80
 10/23/2025   10:52:11   (   0.02,-136.98) (   1.00,-141.27)  488.55                80
 10/24/2025   10:30:44   (   0.02,-136.97) (  -0.01,-136.73)   27.82                80
 10/26/2025   22:36:32   (  -0.02,-136.95) (  -0.16,-137.48)   60.63                80
 10/27/2025   22:15:07   (  -0.02,-136.94) (   0.90,-132.95)  455.10                80
 10/29/2025   10:39:31   (   0.02,-136.91) (   0.30,-138.20)  147.28                80