Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 6 30.  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)
 07/01/2025   08:05:51   (   0.02,-104.72) (  -0.91,-100.67)  461.26                80
 07/02/2025   20:27:48   (  -0.02,-104.73) (  -0.30,-105.98)  142.62                80
 07/03/2025   20:11:44   (  -0.01,-104.73) (   0.70,-101.45)  373.66                80
 07/05/2025   08:33:32   (   0.00,-104.72) (   0.45,-106.72)  227.79                80
 07/06/2025   08:12:08   (  -0.01,-104.72) (  -0.55,-102.19)  288.14                80
 07/07/2025   20:34:06   (   0.01,-104.73) (  -0.59,-107.51)  316.41                80
 07/08/2025   20:18:02   (   0.01,-104.73) (   0.41,-102.98)  199.73                80
 07/10/2025   08:39:49   (  -0.00,-104.72) (   0.79,-108.24)  401.67                80
 07/11/2025   08:18:24   (  -0.00,-104.72) (  -0.21,-103.71)  114.31                80
 07/12/2025   20:40:22   (  -0.00,-104.72) (  -0.98,-109.02)  490.42                80
 07/13/2025   20:24:17   (  -0.00,-104.72) (   0.02,-104.49)   25.96                80