Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 8.  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, -75.21) (  -0.06, -75.71)   58.00                80
 04/10/2023   18:07:03   (   0.05, -75.21) (   0.94, -71.17)  459.04                80
 04/12/2023   06:31:28   (  -0.04, -75.21) (   0.24, -76.44)  140.25                80
 04/13/2023   06:10:01   (  -0.04, -75.21) (  -0.77, -71.90)  376.89                80
 04/14/2023   18:34:36   (   0.03, -75.21) (  -0.38, -77.20)  226.12                80
 04/15/2023   18:13:09   (   0.03, -75.22) (   0.63, -72.66)  291.67                80
 04/17/2023   06:37:34   (  -0.03, -75.24) (   0.60, -77.92)  306.07                80
 04/18/2023   06:16:08   (  -0.03, -75.25) (  -0.47, -73.39)  212.15                80
 04/19/2023   18:40:41   (   0.03, -75.26) (  -0.72, -78.69)  389.44                80
 04/20/2023   18:19:15   (   0.03, -75.28) (   0.30, -74.15)  129.23                80