Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 3 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/16/2021   10:13:47   (  -0.10,-128.40) (   0.68,-131.86)  395.04                80
 03/17/2021   09:52:23   (  -0.11,-128.40) (  -0.35,-127.33)  121.29                80
 03/18/2021   22:14:18   (   0.10,-128.42) (  -0.87,-132.63)  479.66                80
 03/19/2021   21:58:13   (   0.10,-128.42) (   0.17,-128.10)   36.95                80
 03/22/2021   10:01:15   (  -0.09,-128.39) (   0.03,-128.83)   49.99                80
 03/23/2021   09:39:51   (  -0.10,-128.38) (  -1.01,-124.30)  465.48                80
 03/24/2021   22:01:46   (   0.08,-128.39) (  -0.21,-129.59)  137.31                80
 03/25/2021   21:45:42   (   0.09,-128.39) (   0.83,-125.07)  378.49                80
 03/27/2021   10:07:29   (  -0.07,-128.36) (   0.35,-130.33)  224.66                80
 03/28/2021   09:46:03   (  -0.08,-128.35) (  -0.63,-125.80)  290.19                80