Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 7 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 07/11/2025   19:20:55   (   0.05, -89.65) (   0.29, -88.68)  111.08                80
 07/14/2025   07:21:16   (  -0.05, -89.00) (   0.02, -89.39)   43.70                80
 07/15/2025   07:05:10   (  -0.05, -88.75) (  -0.93, -84.84)  445.69                80
 07/16/2025   19:24:27   (   0.06, -88.39) (  -0.33, -90.14)  199.23                80
 07/17/2025   19:08:21   (   0.05, -88.14) (   0.62, -85.59)  290.05                80
 07/19/2025   07:27:28   (  -0.07, -87.74) (   0.64, -90.84)  353.82                80
 07/20/2025   07:11:22   (  -0.06, -87.49) (  -0.31, -86.30)  135.54                80
 07/22/2025   19:11:53   (   0.08, -86.88) (   0.02, -87.05)   19.82                80
 07/23/2025   18:55:48   (   0.07, -86.63) (   1.02, -82.52)  469.80                80
 07/25/2025   07:14:55   (  -0.09, -86.24) (   0.24, -87.77)  173.67                80