Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 1 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/15/2021   18:16:25   (  -0.00, -75.20) (   0.57, -72.69)  285.61                80
 01/17/2021   06:38:13   (  -0.01, -75.20) (   0.58, -77.97)  314.69                80
 01/18/2021   06:16:49   (  -0.01, -75.21) (  -0.43, -73.44)  202.48                80
 01/19/2021   18:38:45   (   0.01, -75.23) (  -0.77, -78.74)  399.66                80
 01/20/2021   18:22:41   (   0.01, -75.25) (   0.25, -74.21)  118.18                80
 01/22/2021   06:44:28   (  -0.01, -75.27) (   0.96, -79.47)  480.30                80
 01/23/2021   06:23:03   (   0.00, -75.28) (  -0.06, -74.95)   37.74                80
 01/25/2021   18:26:15   (  -0.01, -75.32) (  -0.11, -75.72)   45.51                80
 01/26/2021   18:10:11   (  -0.01, -75.34) (   0.91, -71.19)  472.73                80
 01/28/2021   06:31:59   (   0.01, -75.37) (   0.24, -76.47)  125.25                80