Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 10.  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)
 09/10/2025   20:18:00   (   0.12,-104.68) (   0.47,-102.97)  193.52                80
 09/12/2025   08:39:48   (  -0.12,-104.66) (   0.66,-108.25)  409.03                80
 09/13/2025   08:18:23   (  -0.12,-104.65) (  -0.33,-103.72)  107.07                80
 09/14/2025   20:40:18   (   0.12,-104.66) (  -0.83,-109.02)  495.75                80
 09/15/2025   20:24:13   (   0.13,-104.66) (   0.17,-104.48)   20.64                80
 09/18/2025   08:27:15   (  -0.13,-104.65) (   0.01,-105.21)   64.95                80
 09/19/2025   08:05:50   (  -0.14,-104.64) (  -1.05,-100.69)  451.62                80
 09/20/2025   20:27:44   (   0.14,-104.66) (  -0.17,-105.98)  150.37                80
 09/21/2025   20:11:39   (   0.14,-104.67) (   0.83,-101.44)  366.84                80
 09/23/2025   08:33:26   (  -0.13,-104.66) (   0.34,-106.71)  233.75                80
 09/24/2025   08:12:02   (  -0.14,-104.66) (  -0.72,-102.19)  283.06                80