Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 9.  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)
 04/09/2023   18:28:29   (   0.05, -75.20) (  -0.08, -75.71)   58.09                80
 04/10/2023   18:07:02   (   0.05, -75.21) (   0.92, -71.17)  458.96                80
 04/12/2023   06:31:28   (  -0.04, -75.21) (   0.25, -76.43)  140.52                80
 04/13/2023   06:10:01   (  -0.04, -75.21) (  -0.75, -71.90)  376.64                80
 04/14/2023   18:34:36   (   0.03, -75.21) (  -0.40, -77.20)  226.25                80
 04/15/2023   18:13:09   (   0.03, -75.22) (   0.61, -72.66)  291.51                80
 04/17/2023   06:37:34   (  -0.03, -75.23) (   0.55, -77.93)  306.39                80
 04/18/2023   06:16:08   (  -0.03, -75.24) (  -0.46, -73.39)  211.79                80
 04/19/2023   18:40:41   (   0.03, -75.26) (  -0.73, -78.68)  389.67                80
 04/20/2023   18:19:15   (   0.03, -75.28) (   0.28, -74.15)  128.96                80
 04/22/2023   06:43:40   (  -0.03, -75.30) (   0.87, -79.41)  467.66                80