Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 4.  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)
 07/06/2025   22:34:45   (   0.02,-137.00) (  -0.16,-137.74)   84.50                80
 07/07/2025   22:18:40   (   0.01,-136.99) (   0.84,-133.20)  430.89                80
 07/09/2025   10:40:29   (  -0.02,-136.97) (   0.30,-138.48)  171.70                80
 07/10/2025   10:21:26   (  -0.01,-136.96) (  -0.70,-133.95)  343.18                62
 07/11/2025   22:41:01   (   0.01,-136.94) (  -0.50,-139.26)  263.94                80
 07/12/2025   22:24:57   (   0.01,-136.92) (   0.50,-134.72)  250.76                80
 07/14/2025   10:44:04   (  -0.01,-136.90) (   0.70,-139.99)  352.61                80
 07/15/2025   10:28:00   (  -0.00,-136.88) (  -0.31,-135.46)  161.83                80
 07/16/2025   22:47:17   (   0.00,-136.85) (  -0.88,-140.76)  446.18                80
 07/17/2025   22:31:13   (   0.00,-136.83) (   0.12,-136.23)   67.79                80