Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 17.  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)
 06/18/2023   18:15:38   (   0.02, -75.19) (   0.56, -72.71)  283.01                80
 06/20/2023   06:34:45   (  -0.03, -75.19) (   0.61, -77.98)  318.04                80
 06/21/2023   06:18:41   (  -0.03, -75.19) (  -0.44, -73.45)  198.32                80
 06/22/2023   18:37:56   (   0.03, -75.19) (  -0.79, -78.75)  406.17                80
 06/23/2023   18:21:52   (   0.03, -75.19) (   0.25, -74.22)  110.73                80
 06/25/2023   06:40:59   (  -0.03, -75.20) (   0.91, -79.49)  488.84                80
 06/26/2023   06:24:53   (  -0.03, -75.21) (  -0.08, -74.96)   28.46                80
 06/28/2023   18:25:24   (   0.04, -75.23) (  -0.09, -75.73)   57.36                80
 06/29/2023   18:09:20   (   0.04, -75.24) (   0.96, -71.21)  460.15                80
 07/01/2023   06:28:26   (  -0.04, -75.25) (   0.26, -76.47)  139.00                80