Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 10 18.  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)
 10/20/2025   08:26:37   (  -0.03,-104.69) (   0.06,-105.02)   38.23                80
 10/21/2025   08:05:12   (  -0.04,-104.69) (  -0.99,-100.49)  478.85                80
 10/22/2025   20:27:06   (   0.02,-104.69) (  -0.19,-105.79)  124.00                80
 10/23/2025   20:11:00   (   0.03,-104.70) (   0.81,-101.25)  393.36                80
 10/25/2025   08:32:44   (  -0.01,-104.70) (   0.40,-106.49)  205.46                80
 10/26/2025   08:11:19   (  -0.02,-104.69) (  -0.66,-101.97)  311.22                80
 10/27/2025   20:33:12   (   0.01,-104.68) (  -0.57,-107.25)  292.80                80
 10/28/2025   20:17:06   (   0.02,-104.68) (   0.43,-102.71)  224.30                80
 10/30/2025   08:38:51   (  -0.01,-104.69) (   0.70,-107.97)  373.82                80
 10/31/2025   08:17:24   (  -0.02,-104.68) (  -0.31,-103.43)  142.92                80