Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 5 27.  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)
 05/27/2023   18:25:30   (   0.01, -75.19) (  -0.13, -75.70)   58.64                80
 05/28/2023   18:09:25   (   0.01, -75.20) (   0.89, -71.17)  458.38                80
 05/30/2023   06:28:33   (  -0.02, -75.21) (   0.26, -76.45)  141.00                80
 05/31/2023   06:12:29   (  -0.02, -75.22) (  -0.76, -71.92)  376.15                80
 06/01/2023   18:31:45   (   0.02, -75.23) (  -0.44, -77.23)  227.71                80
 06/02/2023   18:15:41   (   0.02, -75.24) (   0.58, -72.70)  289.57                80
 06/04/2023   06:34:49   (  -0.03, -75.26) (   0.56, -77.98)  309.53                80
 06/05/2023   06:18:45   (  -0.03, -75.27) (  -0.46, -73.45)  207.76                80
 06/06/2023   18:38:01   (   0.03, -75.28) (  -0.73, -78.76)  395.98                80
 06/07/2023   18:21:56   (   0.03, -75.29) (   0.29, -74.23)  121.65                80
 06/09/2023   06:41:04   (  -0.03, -75.31) (   0.90, -79.50)  476.60                80