Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 8 7.  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)
 08/08/2023   20:37:46   (   0.01,-104.70) (  -0.92,-108.74)  460.95                80
 08/09/2023   20:21:40   (   0.01,-104.70) (   0.12,-104.21)   55.93                80
 08/12/2023   08:24:40   (  -0.01,-104.72) (   0.05,-104.94)   25.44                80
 08/13/2023   08:03:15   (  -0.02,-104.72) (  -1.00,-100.41)  491.17                80
 08/14/2023   20:25:08   (   0.02,-104.70) (  -0.23,-105.70)  114.92                80
 08/15/2023   20:09:02   (   0.02,-104.70) (   0.82,-101.17)  402.25                80
 08/17/2023   08:30:48   (  -0.02,-104.72) (   0.38,-106.43)  194.95                80
 08/18/2023   08:09:22   (  -0.02,-104.72) (  -0.67,-101.90)  322.14                80
 08/19/2023   20:31:16   (   0.02,-104.70) (  -0.55,-107.19)  283.84                80
 08/20/2023   20:15:10   (   0.02,-104.70) (   0.51,-102.66)  233.63                80