Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 4 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/13/2021   06:22:48   (  -0.04, -75.21) (  -0.14, -74.90)   36.38                80
 04/15/2021   18:25:58   (   0.04, -75.22) (  -0.09, -75.66)   50.07                80
 04/16/2021   18:09:54   (   0.04, -75.23) (   0.96, -71.13)  467.52                80
 04/18/2021   06:31:40   (  -0.03, -75.25) (   0.25, -76.39)  130.52                80
 04/19/2021   06:10:16   (  -0.03, -75.26) (  -0.80, -71.86)  387.00                80
 04/20/2021   18:32:11   (   0.02, -75.26) (  -0.41, -77.16)  215.98                80
 04/21/2021   18:16:06   (   0.02, -75.28) (   0.64, -72.63)  302.09                80
 04/23/2021   06:37:53   (  -0.02, -75.31) (   0.56, -77.89)  294.73                80
 04/24/2021   06:16:27   (  -0.02, -75.32) (  -0.43, -73.35)  223.44                80
 04/25/2021   18:38:24   (   0.01, -75.33) (  -0.72, -78.66)  378.92                80
 04/26/2021   18:22:18   (   0.02, -75.35) (   0.28, -74.12)  139.67                80