Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2019   22:02:28   (   0.07,-128.09) (  -0.29,-129.65)  178.01                80
 06/24/2019   21:46:23   (   0.06,-128.07) (   0.72,-125.12)  335.85                80
 06/26/2019   10:05:31   (  -0.08,-128.02) (   0.46,-130.39)  270.26                80
 06/27/2019   09:49:27   (  -0.07,-127.99) (  -0.54,-125.86)  242.93                80
 06/28/2019   22:08:44   (   0.10,-127.94) (  -0.61,-131.17)  367.67                80
 06/29/2019   21:52:40   (   0.09,-127.91) (   0.39,-126.63)  145.40                80
 07/01/2019   10:11:48   (  -0.12,-127.86) (   0.78,-131.90)  461.37                80
 07/02/2019   09:55:44   (  -0.11,-127.82) (  -0.22,-127.37)   50.83                80
 07/04/2019   21:56:15   (   0.12,-127.70) (   0.02,-128.14)   49.71                80
 07/05/2019   21:40:11   (   0.11,-127.66) (   1.03,-123.61)  462.45                80