Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 11 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/18/2021   06:18:54   (   0.03, -75.19) (  -0.29, -73.66)  173.28                80
 11/19/2021   18:40:52   (  -0.03, -75.19) (  -0.89, -78.97)  431.06                80
 11/20/2021   18:24:48   (  -0.03, -75.20) (   0.12, -74.44)   85.29                80
 11/23/2021   06:27:55   (   0.03, -75.20) (   0.01, -75.20)    1.57                80
 11/25/2021   18:28:30   (  -0.02, -75.21) (  -0.18, -75.98)   86.53                80
 11/26/2021   18:12:27   (  -0.02, -75.22) (   0.83, -71.45)  430.40                80
 11/28/2021   06:34:16   (   0.01, -75.24) (   0.37, -76.72)  169.24                80
 11/29/2021   06:12:52   (   0.01, -75.25) (  -0.65, -72.19)  347.97                80
 11/30/2021   18:34:51   (  -0.01, -75.26) (  -0.53, -77.50)  254.84                80
 12/01/2021   18:18:47   (  -0.01, -75.28) (   0.49, -72.97)  262.76                80