Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 11 20.  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)
 11/21/2025   19:26:33   (   0.03, -89.50) (  -0.09, -89.96)   52.51                80
 11/22/2025   19:05:11   (   0.06, -89.50) (   0.99, -85.45)  462.71                80
 11/24/2025   07:29:41   (  -0.00, -89.50) (   0.24, -90.71)  137.77                80
 11/25/2025   07:08:18   (  -0.04, -89.50) (  -0.78, -86.19)  376.99                80
 11/26/2025   19:32:58   (  -0.01, -89.50) (  -0.44, -91.50)  227.12                80
 11/27/2025   19:11:35   (   0.02, -89.51) (   0.59, -86.98)  288.50                80
 11/29/2025   07:36:04   (   0.04, -89.52) (   0.64, -92.24)  310.28                80
 11/30/2025   07:14:42   (   0.01, -89.52) (  -0.39, -87.72)  204.98                80
 12/01/2025   19:39:20   (  -0.06, -89.52) (  -0.87, -93.02)  399.18                80
 12/02/2025   19:17:58   (  -0.04, -89.53) (   0.17, -88.50)  116.70                80
 12/04/2025   07:42:27   (   0.09, -89.55) (   1.06, -93.77)  481.25                80