Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 09/13/2025   08:18:23   (  -0.11,-104.65) (  -0.34,-103.71)  107.14                80
 09/14/2025   20:40:17   (   0.11,-104.66) (  -0.89,-109.00)  495.59                80
 09/15/2025   20:24:13   (   0.12,-104.66) (   0.17,-104.48)   20.76                80
 09/18/2025   08:27:15   (  -0.12,-104.64) (   0.02,-105.21)   65.22                80
 09/19/2025   08:05:50   (  -0.13,-104.64) (  -1.04,-100.68)  451.24                80
 09/20/2025   20:27:44   (   0.13,-104.66) (  -0.18,-105.97)  150.66                80
 09/21/2025   20:11:39   (   0.13,-104.66) (   0.82,-101.44)  366.46                80
 09/23/2025   08:33:26   (  -0.12,-104.65) (   0.36,-106.70)  234.45                80
 09/24/2025   08:12:02   (  -0.13,-104.65) (  -0.70,-102.18)  282.26                80
 09/25/2025   20:33:56   (   0.12,-104.66) (  -0.51,-107.47)  320.26                80