Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 1 30.  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)
 02/01/2023   06:44:47   (  -0.06, -75.18) (   0.91, -79.50)  491.61                80
 02/02/2023   06:23:21   (  -0.05, -75.18) (  -0.10, -74.96)   24.90                80
 02/04/2023   18:26:31   (   0.05, -75.18) (  -0.05, -75.74)   62.75                80
 02/05/2023   18:10:25   (   0.04, -75.19) (   0.91, -71.19)  454.46                80
 02/07/2023   06:32:11   (  -0.04, -75.20) (   0.27, -76.46)  144.58                80
 02/08/2023   06:10:45   (  -0.04, -75.21) (  -0.75, -71.93)  372.92                80
 02/09/2023   18:32:41   (   0.04, -75.22) (  -0.41, -77.24)  230.02                80
 02/10/2023   18:16:35   (   0.04, -75.23) (   0.62, -72.71)  287.90                80
 02/12/2023   06:38:21   (  -0.04, -75.25) (   0.56, -77.98)  309.89                80
 02/13/2023   06:16:56   (  -0.04, -75.27) (  -0.47, -73.45)  208.03                80