Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 3 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/07/2019   09:46:31   (  -0.00,-128.40) (  -0.59,-125.85)  291.83                80
 03/08/2019   22:11:06   (   0.00,-128.36) (  -0.61,-131.14)  317.22                80
 03/09/2019   21:49:41   (   0.00,-128.35) (   0.39,-126.61)  199.17                80
 03/11/2019   10:11:28   (  -0.00,-128.39) (   0.75,-131.88)  396.66                80
 03/12/2019   09:55:23   (  -0.00,-128.39) (  -0.25,-127.34)  119.40                80
 03/13/2019   22:17:18   (  -0.00,-128.33) (  -0.95,-132.64)  490.81                80
 03/14/2019   21:55:52   (  -0.00,-128.32) (   0.06,-128.11)   24.66                80
 03/17/2019   09:58:53   (   0.00,-128.33) (   0.14,-128.83)   57.69                80
 03/18/2019   09:42:48   (   0.00,-128.32) (  -0.87,-124.30)  457.46                80
 03/19/2019   22:04:43   (  -0.00,-128.25) (  -0.32,-129.59)  153.87                80
 03/20/2019   21:43:18   (  -0.00,-128.23) (   0.69,-125.06)  361.06                80