Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 5.  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)
 04/06/2023   06:44:07   (  -0.05, -75.21) (   0.91, -79.49)  488.10                80
 04/07/2023   06:22:41   (  -0.05, -75.20) (  -0.08, -74.95)   28.73                80
 04/09/2023   18:28:29   (   0.05, -75.20) (  -0.08, -75.71)   58.96                80
 04/10/2023   18:07:03   (   0.05, -75.20) (   0.98, -71.18)  457.93                80
 04/12/2023   06:31:28   (  -0.04, -75.20) (   0.26, -76.43)  141.29                80
 04/13/2023   06:10:02   (  -0.04, -75.20) (  -0.80, -71.91)  375.71                80
 04/14/2023   18:34:35   (   0.03, -75.20) (  -0.40, -77.20)  227.96                80
 04/15/2023   18:13:09   (   0.03, -75.20) (   0.61, -72.66)  289.61                80
 04/17/2023   06:37:34   (  -0.03, -75.22) (   0.56, -77.93)  308.06                80
 04/18/2023   06:16:08   (  -0.03, -75.23) (  -0.45, -73.39)  209.96                80