Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 1 12.  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)
 01/12/2025   22:18:48   (  -0.03,-136.96) (   0.82,-133.10)  439.46                80
 01/14/2025   10:40:32   (   0.04,-136.94) (   0.36,-138.36)  161.28                80
 01/15/2025   10:19:05   (   0.04,-136.93) (  -0.63,-133.81)  355.07                80
 01/16/2025   22:40:57   (  -0.05,-136.92) (  -0.54,-139.10)  249.25                80
 01/17/2025   22:24:50   (  -0.04,-136.91) (   0.46,-134.56)  267.14                80
 01/19/2025   10:46:34   (   0.05,-136.89) (   0.72,-139.82)  333.71                80
 01/20/2025   10:25:07   (   0.05,-136.88) (  -0.28,-135.27)  182.33                80
 01/21/2025   22:46:59   (  -0.05,-136.85) (  -0.88,-140.57)  422.94                80
 01/22/2025   22:30:51   (  -0.06,-136.84) (   0.13,-136.02)   92.75                80
 01/25/2025   10:31:08   (   0.07,-136.79) (   0.03,-136.74)    6.61                80