Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 24.  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)
 09/24/2025   22:34:35   (   0.02,-137.01) (  -0.11,-137.69)   77.00                80
 09/25/2025   22:18:29   (   0.02,-137.01) (   0.90,-133.16)  439.59                80
 09/27/2025   10:40:16   (  -0.02,-136.99) (   0.31,-138.41)  161.88                80
 09/28/2025   10:18:50   (  -0.02,-136.99) (  -0.71,-133.88)  354.16                80
 09/29/2025   22:43:24   (   0.01,-136.98) (  -0.50,-139.17)  250.14                80
 09/30/2025   22:21:59   (   0.02,-136.97) (   0.52,-134.64)  265.47                80
 10/02/2025   10:46:25   (  -0.01,-136.94) (   0.67,-139.90)  337.25                80
 10/03/2025   10:25:00   (  -0.02,-136.93) (  -0.35,-135.36)  178.05                80
 10/04/2025   22:49:34   (   0.02,-136.91) (  -0.84,-140.66)  427.26                80
 10/05/2025   22:30:49   (   0.02,-136.90) (   0.18,-136.12)   87.91                80
 10/08/2025   10:33:48   (   0.00,-136.84) (   0.02,-136.84)    1.18                80