Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/04/2018   09:56:01   (   0.16,-130.55) (  -0.52,-127.42)  355.53                80
 11/05/2018   22:15:14   (  -0.13,-129.42) (  -0.86,-132.69)  372.49                80
 11/06/2018   21:59:07   (  -0.14,-128.59) (  -0.02,-128.12)   53.89                80
 11/07/2018   21:40:18   (  -0.16,-127.76) (   0.76,-123.54)  480.18                80
 11/09/2018   09:59:22   (   0.13,-126.35) (   0.68,-128.75)  274.80                80
 11/10/2018   09:43:14   (   0.14,-125.52) (  -0.16,-124.19)  151.93                80
 11/12/2018   21:43:40   (  -0.11,-123.57) (  -0.38,-124.88)  148.73                80
 11/13/2018   21:27:31   (  -0.12,-122.74) (   0.40,-120.30)  276.92                80
 11/15/2018   09:46:35   (   0.09,-121.29) (   1.04,-125.52)  481.45                80
 11/16/2018   09:27:47   (   0.10,-120.47) (   0.19,-120.95)   54.95                80
 11/17/2018   09:11:40   (   0.11,-119.63) (  -0.65,-116.38)  371.25                80