Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 7 14.  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   (   0.02,-104.71) (   0.14,-105.22)   58.27                80
 07/17/2025   08:05:56   (   0.02,-104.71) (  -0.86,-100.69)  458.01                80
 07/18/2025   20:27:53   (  -0.02,-104.72) (  -0.33,-106.00)  145.70                80
 07/19/2025   20:11:49   (  -0.03,-104.72) (   0.68,-101.47)  370.60                80
 07/21/2025   08:33:37   (   0.03,-104.71) (   0.46,-106.74)  231.22                80
 07/22/2025   08:12:13   (   0.04,-104.71) (  -0.55,-102.21)  284.77                80
 07/23/2025   20:34:09   (  -0.04,-104.71) (  -0.69,-107.51)  319.53                80
 07/24/2025   20:18:05   (  -0.04,-104.71) (   0.32,-102.98)  196.83                80
 07/26/2025   08:39:53   (   0.04,-104.71) (   0.82,-108.26)  404.26                80
 07/27/2025   08:18:28   (   0.04,-104.71) (  -0.19,-103.72)  112.18                80