Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 10 13.  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)
 10/14/2025   19:39:06   (   0.21, -89.51) (  -0.61, -93.06)  406.20                80
 10/15/2025   19:17:41   (   0.23, -89.51) (   0.43, -88.53)  110.96                80
 10/17/2025   07:42:06   (  -0.20, -89.49) (   0.75, -93.79)  490.06                80
 10/18/2025   07:20:41   (  -0.22, -89.49) (  -0.30, -89.26)   27.28                80
 10/20/2025   19:26:29   (   0.20, -89.54) (   0.11, -90.01)   53.79                80
 10/21/2025   19:05:03   (   0.22, -89.55) (   1.16, -85.48)  464.21                80
 10/23/2025   07:29:27   (  -0.19, -89.54) (   0.06, -90.73)  135.43                80
 10/24/2025   07:08:01   (  -0.20, -89.54) (  -0.94, -86.19)  382.02                80
 10/25/2025   19:32:35   (   0.17, -89.58) (  -0.24, -91.48)  216.80                80
 10/26/2025   19:11:09   (   0.19, -89.59) (   0.76, -86.94)  301.21                80