Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2021   18:40:15   (   0.02, -75.18) (  -0.81, -78.88)  421.25                80
 12/22/2021   18:24:10   (   0.02, -75.18) (   0.22, -74.35)   95.47                80
 12/25/2021   06:27:10   (  -0.02, -75.18) (  -0.06, -75.07)   12.03                80
 12/27/2021   18:27:39   (   0.02, -75.19) (  -0.10, -75.84)   74.13                80
 12/28/2021   18:11:32   (   0.02, -75.19) (   0.88, -71.30)  443.42                80
 12/30/2021   06:33:18   (  -0.02, -75.20) (   0.26, -76.57)  155.78                80
 12/31/2021   06:11:52   (  -0.01, -75.20) (  -0.72, -72.03)  361.73                80
 01/01/2022   18:33:46   (   0.00, -75.21) (  -0.47, -77.32)  241.21                80
 01/02/2022   18:17:40   (  -0.00, -75.21) (   0.51, -72.78)  276.57                80