Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 3 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/05/2021   10:17:56   (  -0.05,-137.21) (  -0.85,-133.80)  389.98                80
 03/06/2021   22:39:52   (   0.05,-137.21) (  -0.38,-139.09)  214.25                80
 03/07/2021   22:23:47   (   0.04,-137.21) (   0.66,-134.56)  301.60                80
 03/09/2021   10:45:35   (  -0.03,-137.19) (   0.53,-139.83)  300.79                80
 03/10/2021   10:24:09   (  -0.03,-137.18) (  -0.44,-135.29)  214.83                80
 03/11/2021   22:46:04   (   0.02,-137.17) (  -0.77,-140.58)  390.03                80
 03/12/2021   22:30:00   (   0.02,-137.16) (   0.26,-136.06)  125.55                80
 03/14/2021   10:51:47   (  -0.02,-137.14) (   0.93,-141.32)  477.05                80
 03/15/2021   10:30:23   (  -0.02,-137.13) (  -0.11,-136.80)   38.17                80
 03/17/2021   22:33:34   (   0.02,-137.10) (  -0.06,-137.57)   52.95                80
 03/18/2021   22:17:28   (   0.02,-137.08) (   0.92,-133.03)  461.83                80