Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 6 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/27/2019   09:49:27   (  -0.07,-127.99) (  -0.56,-125.86)  243.20                80
 06/28/2019   22:08:45   (   0.10,-127.95) (  -0.60,-131.17)  366.82                80
 06/29/2019   21:52:39   (   0.09,-127.91) (   0.35,-126.62)  146.36                80
 07/01/2019   10:11:48   (  -0.12,-127.86) (   0.77,-131.91)  460.78                80
 07/02/2019   09:55:44   (  -0.11,-127.82) (  -0.24,-127.38)   51.59                80
 07/04/2019   21:56:16   (   0.12,-127.72) (   0.03,-128.14)   48.33                80
 07/05/2019   21:40:11   (   0.11,-127.68) (   1.04,-123.61)  463.90                80
 07/07/2019   09:59:20   (  -0.13,-127.61) (   0.14,-128.88)  143.97                80
 07/08/2019   09:43:15   (  -0.12,-127.57) (  -0.87,-124.35)  367.84                80
 07/09/2019   22:02:31   (   0.15,-127.50) (  -0.34,-129.65)  245.32                80