Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 5 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/21/2019   06:17:09   (   0.00, -75.17) (  -0.37, -73.45)  195.91                80
 05/22/2019   18:39:06   (   0.00, -75.17) (  -0.80, -78.76)  408.46                80
 05/23/2019   18:23:01   (   0.01, -75.18) (   0.20, -74.22)  107.96                80
 05/25/2019   06:44:51   (  -0.01, -75.18) (   0.94, -79.50)  492.69                80
 05/26/2019   06:23:26   (  -0.01, -75.18) (  -0.05, -74.97)   24.00                80
 05/28/2019   18:26:39   (   0.01, -75.21) (  -0.12, -75.75)   62.00                80
 05/29/2019   18:10:36   (   0.02, -75.22) (   0.94, -71.23)  455.42                80
 05/31/2019   06:32:24   (  -0.02, -75.23) (   0.26, -76.49)  143.76                80
 06/01/2019   06:10:59   (  -0.02, -75.24) (  -0.74, -71.96)  373.64                80
 06/02/2019   18:32:57   (   0.03, -75.26) (  -0.42, -77.27)  228.91                80