Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 12 1.  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)
 12/01/2025   19:38:15   (  -0.06, -89.51) (   0.00, -93.21)  412.27                 0
 12/02/2025   19:17:58   (  -0.04, -89.51) (   0.21, -88.51)  115.20                80
 12/04/2025   07:42:27   (   0.10, -89.53) (   1.07, -93.76)  483.14                80
 12/05/2025   07:21:04   (   0.07, -89.53) (   0.03, -89.24)   32.08                80
 12/07/2025   19:27:00   (  -0.10, -89.53) (  -0.23, -90.02)   56.80                80
 12/08/2025   19:05:38   (  -0.06, -89.54) (   0.87, -85.52)  459.43                80
 12/10/2025   07:30:07   (   0.12, -89.57) (   0.42, -90.77)  137.54                80
 12/11/2025   07:08:45   (   0.08, -89.58) (  -0.69, -86.26)  378.52                80
 12/12/2025   19:33:23   (  -0.14, -89.58) (  -0.60, -91.55)  224.71                80
 12/13/2025   19:12:00   (  -0.11, -89.60) (   0.45, -87.03)  292.36                80
 12/15/2025   07:36:29   (   0.17, -89.65) (   0.78, -92.30)  302.62                80