Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 7 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2023   20:32:06   (  -0.00,-104.71) (  -0.59,-107.33)  298.08                80
 07/03/2023   20:16:00   (   0.00,-104.71) (   0.41,-102.79)  218.17                80
 07/05/2023   08:37:47   (  -0.01,-104.73) (   0.73,-108.07)  380.87                80
 07/06/2023   08:16:22   (  -0.01,-104.72) (  -0.27,-103.53)  135.17                80
 07/07/2023   20:38:17   (   0.02,-104.70) (  -0.93,-108.83)  471.64                80
 07/08/2023   20:22:12   (   0.02,-104.70) (   0.08,-104.30)   45.25                80
 07/11/2023   08:25:14   (  -0.02,-104.73) (   0.06,-105.04)   35.95                80
 07/12/2023   08:03:48   (  -0.02,-104.72) (  -0.94,-100.50)  480.50                80
 07/13/2023   20:25:43   (   0.02,-104.70) (  -0.24,-105.81)  126.34                80
 07/14/2023   20:09:38   (   0.02,-104.70) (   0.77,-101.27)  390.41                80
 07/16/2023   08:31:25   (  -0.03,-104.73) (   0.37,-106.55)  207.14                80