Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 4 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)
 04/04/2019   22:04:31   (  -0.05,-127.99) (  -0.41,-129.52)  174.86                80
 04/05/2019   21:43:05   (  -0.05,-127.97) (   0.60,-124.99)  338.85                80
 04/07/2019   10:04:52   (   0.05,-127.94) (   0.59,-130.25)  264.19                80
 04/08/2019   09:48:46   (   0.05,-127.90) (  -0.42,-125.71)  249.19                80
 04/09/2019   22:08:01   (  -0.05,-127.84) (  -0.77,-131.01)  362.20                80
 04/10/2019   21:51:56   (  -0.06,-127.80) (   0.24,-126.48)  150.59                80
 04/12/2019   10:11:02   (   0.06,-127.75) (   0.95,-131.74)  454.15                80
 04/13/2019   09:54:57   (   0.06,-127.71) (  -0.06,-127.20)   58.33                80
 04/15/2019   21:55:26   (  -0.06,-127.59) (  -0.17,-127.95)   41.95                80
 04/16/2019   21:39:20   (  -0.07,-127.55) (   0.84,-123.42)  470.34                80
 04/18/2019   09:58:26   (   0.06,-127.50) (   0.35,-128.68)  135.31                80