Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 11.  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)
 09/11/2025   10:40:27   (  -0.02,-136.99) (   0.29,-138.47)  167.80                80
 09/12/2025   10:19:01   (  -0.02,-136.99) (  -0.71,-133.93)  348.71                80
 09/13/2025   22:40:57   (   0.03,-137.00) (  -0.45,-139.24)  254.18                80
 09/14/2025   22:24:51   (   0.03,-137.00) (   0.54,-134.70)  261.86                80
 09/16/2025   10:46:39   (  -0.03,-136.97) (   0.64,-139.96)  341.20                80
 09/17/2025   10:25:13   (  -0.03,-136.96) (  -0.36,-135.43)  174.63                80
 09/18/2025   22:47:08   (   0.03,-136.97) (  -0.80,-140.73)  428.84                80
 09/19/2025   22:31:03   (   0.03,-136.96) (   0.20,-136.19)   87.11                80
 09/22/2025   10:34:05   (  -0.03,-136.93) (  -0.02,-136.92)    1.32                80
 09/24/2025   22:34:35   (   0.04,-136.91) (  -0.13,-137.69)   88.97                80