Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 3 9.  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)
 03/11/2023   06:32:06   (  -0.07, -75.20) (   0.23, -76.53)  151.44                80
 03/12/2023   06:10:41   (  -0.07, -75.20) (  -0.77, -72.00)  365.40                80
 03/13/2023   18:32:36   (   0.07, -75.21) (  -0.41, -77.30)  238.29                80
 03/14/2023   18:16:31   (   0.06, -75.21) (   0.59, -72.77)  278.77                80
 03/16/2023   06:38:17   (  -0.06, -75.22) (   0.60, -78.03)  320.66                80
 03/17/2023   06:16:52   (  -0.05, -75.23) (  -0.42, -73.50)  196.56                80
 03/18/2023   18:38:47   (   0.04, -75.24) (  -0.74, -78.81)  406.38                80
 03/19/2023   18:20:01   (   0.04, -75.25) (   0.28, -74.27)  111.53                80
 03/21/2023   06:44:28   (  -0.04, -75.27) (   0.89, -79.54)  486.12                80
 03/22/2023   06:23:01   (  -0.04, -75.29) (  -0.08, -75.00)   32.22                80