Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 6 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/28/2019   22:08:45   (   0.10,-127.95) (  -0.59,-131.17)  366.29                80
 06/29/2019   21:52:39   (   0.09,-127.92) (   0.35,-126.62)  147.09                80
 07/01/2019   10:11:48   (  -0.12,-127.87) (   0.76,-131.91)  459.89                80
 07/02/2019   09:55:43   (  -0.11,-127.83) (  -0.18,-127.36)   52.72                80
 07/04/2019   21:56:16   (   0.12,-127.73) (   0.03,-128.14)   46.48                80
 07/05/2019   21:40:11   (   0.11,-127.69) (   1.04,-123.61)  465.96                80
 07/07/2019   09:59:20   (  -0.13,-127.63) (   0.13,-128.88)  141.76                80
 07/08/2019   09:43:15   (  -0.12,-127.59) (  -0.87,-124.35)  370.27                80
 07/09/2019   22:02:31   (   0.15,-127.52) (  -0.34,-129.65)  242.36                80
 07/10/2019   21:46:27   (   0.14,-127.48) (   0.66,-125.11)  269.77                80
 07/12/2019   10:05:35   (  -0.16,-127.42) (   0.51,-130.38)  337.93                80