Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 2 9.  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)
 02/09/2023   20:17:02   (  -0.02,-104.42) (   0.32,-102.77)  187.31                80
 02/12/2023   08:17:15   (   0.03,-102.36) (   0.28,-103.41)  119.36                80
 02/13/2023   08:01:07   (   0.03,-101.56) (  -0.58, -98.84)  309.82                80
 02/14/2023   20:20:17   (  -0.04,-100.34) (  -0.84,-104.09)  426.08                80
 02/15/2023   20:04:08   (  -0.04, -99.53) (  -0.04, -99.51)    3.08                80
 02/16/2023   19:45:19   (  -0.04, -98.73) (   0.83, -94.94)  432.25                80
 02/18/2023   08:04:19   (   0.05, -97.47) (   0.66,-100.13)  304.00                80
 02/19/2023   07:48:11   (   0.05, -96.66) (  -0.21, -95.57)  125.15                80
 02/21/2023   19:48:31   (  -0.05, -94.64) (  -0.43, -96.23)  180.83                80
 02/22/2023   19:32:22   (  -0.05, -93.84) (   0.46, -91.66)  249.03                80