Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 12 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/05/2021   18:40:34   (  -0.00, -75.18) (  -0.83, -78.93)  426.70                80
 12/06/2021   18:24:27   (  -0.01, -75.18) (   0.14, -74.38)   90.13                80
 12/09/2021   06:27:28   (   0.00, -75.18) (  -0.01, -75.12)    6.96                80
 12/11/2021   18:27:57   (  -0.00, -75.21) (  -0.17, -75.89)   77.79                80
 12/12/2021   18:11:52   (  -0.00, -75.22) (   0.86, -71.36)  440.32                80
 12/14/2021   06:33:38   (   0.00, -75.24) (   0.30, -76.62)  157.86                80
 12/15/2021   06:12:11   (   0.01, -75.25) (  -0.68, -72.08)  360.54                80
 12/16/2021   18:34:07   (  -0.01, -75.28) (  -0.47, -77.39)  240.65                80
 12/17/2021   18:18:01   (  -0.01, -75.29) (   0.57, -72.86)  277.99                80