Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2026 4 8.  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)
 04/09/2026   08:21:42   (   0.13,-104.71) (  -0.16,-103.45)  143.70                80
 04/10/2026   20:40:58   (  -0.12,-104.67) (  -1.04,-108.74)  464.07                80
 04/11/2026   20:24:52   (  -0.13,-104.67) (  -0.03,-104.20)   53.13                80
 04/14/2026   08:25:13   (   0.13,-104.70) (   0.20,-104.92)   25.37                80
 04/15/2026   08:09:08   (   0.14,-104.70) (  -0.81,-100.38)  491.92                80
 04/16/2026   20:28:23   (  -0.12,-104.67) (  -0.37,-105.68)  115.82                80
 04/17/2026   20:12:17   (  -0.13,-104.67) (   0.64,-101.14)  401.29                80
 04/19/2026   08:31:25   (   0.11,-104.70) (   0.48,-106.41)  194.99                80
 04/20/2026   08:15:19   (   0.12,-104.69) (  -0.53,-101.87)  321.72                80
 04/21/2026   20:34:34   (  -0.10,-104.65) (  -0.69,-107.16)  286.87                80