Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 4.  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)
 04/04/2023   18:19:42   (   0.05, -75.20) (   0.26, -74.22)  110.93                80
 04/06/2023   06:44:07   (  -0.04, -75.19) (   0.93, -79.48)  489.23                80
 04/07/2023   06:22:42   (  -0.05, -75.19) (  -0.13, -74.96)   27.13                80
 04/09/2023   18:28:28   (   0.05, -75.17) (  -0.10, -75.71)   61.83                80
 04/10/2023   18:07:03   (   0.05, -75.16) (   0.97, -71.18)  454.60                80
 04/12/2023   06:31:27   (  -0.04, -75.16) (   0.27, -76.43)  145.23                80
 04/13/2023   06:10:02   (  -0.04, -75.16) (  -0.80, -71.91)  371.32                80
 04/14/2023   18:34:35   (   0.03, -75.15) (  -0.41, -77.20)  233.16                80
 04/15/2023   18:13:09   (   0.03, -75.15) (   0.60, -72.66)  283.97                80
 04/17/2023   06:37:33   (  -0.02, -75.16) (   0.62, -77.91)  314.34                80