Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 7 15.  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)
 07/16/2025   08:27:21   (   0.01,-104.71) (   0.15,-105.22)   58.59                80
 07/17/2025   08:05:57   (   0.01,-104.71) (  -0.92,-100.70)  457.87                80
 07/18/2025   20:27:54   (   0.01,-104.73) (  -0.28,-106.01)  146.00                80
 07/19/2025   20:11:50   (   0.01,-104.73) (   0.73,-101.48)  370.04                80
 07/21/2025   08:33:37   (  -0.01,-104.71) (   0.47,-106.74)  231.86                80
 07/22/2025   08:12:13   (  -0.01,-104.71) (  -0.54,-102.21)  284.16                80
 07/23/2025   20:34:10   (   0.01,-104.72) (  -0.64,-107.52)  319.92                80
 07/24/2025   20:18:06   (   0.01,-104.72) (   0.37,-102.99)  196.47                80
 07/26/2025   08:39:54   (  -0.01,-104.71) (   0.77,-108.27)  404.70                80
 07/27/2025   08:18:29   (  -0.01,-104.71) (  -0.24,-103.74)  111.82                80
 07/28/2025   20:40:27   (   0.01,-104.73) (  -0.93,-109.05)  491.55                80