Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2020 12 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/19/2020   18:22:35   (  -0.00, -75.16) (   0.20, -74.15)  114.49                80
 12/21/2020   06:44:23   (  -0.01, -75.17) (   0.96, -79.43)  485.78                80
 12/22/2020   06:22:59   (  -0.01, -75.18) (  -0.05, -74.90)   31.43                80
 12/24/2020   18:26:12   (   0.00, -75.21) (  -0.11, -75.68)   53.67                80
 12/25/2020   18:10:07   (  -0.01, -75.23) (   0.90, -71.15)  464.21                80
 12/27/2020   06:31:55   (   0.01, -75.25) (   0.25, -76.43)  134.41                80
 12/28/2020   06:10:31   (   0.01, -75.26) (  -0.76, -71.90)  383.33                80
 12/29/2020   18:32:27   (  -0.01, -75.28) (  -0.45, -77.20)  218.95                80
 12/30/2020   18:16:23   (  -0.01, -75.30) (   0.56, -72.67)  299.10                80
 01/01/2021   06:38:11   (   0.01, -75.33) (   0.59, -77.95)  298.79                80