Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 11.  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)
 09/12/2025   08:39:48   (  -0.12,-104.66) (   0.71,-108.24)  409.07                80
 09/13/2025   08:18:23   (  -0.12,-104.65) (  -0.35,-103.72)  107.01                80
 09/14/2025   20:40:17   (   0.12,-104.66) (  -0.88,-109.01)  495.78                80
 09/15/2025   20:24:13   (   0.13,-104.66) (   0.18,-104.48)   20.64                80
 09/18/2025   08:27:15   (  -0.13,-104.64) (   0.00,-105.21)   65.06                80
 09/19/2025   08:05:49   (  -0.14,-104.64) (  -1.00,-100.68)  451.45                80
 09/20/2025   20:27:45   (   0.14,-104.66) (  -0.16,-105.98)  150.50                80
 09/21/2025   20:11:39   (   0.14,-104.66) (   0.84,-101.44)  366.68                80
 09/23/2025   08:33:26   (  -0.13,-104.66) (   0.33,-106.71)  233.99                80
 09/24/2025   08:12:01   (  -0.14,-104.66) (  -0.67,-102.17)  282.79                80