Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 4 4.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/12/2017   23:04:44   (  80.86, 142.82) 04/12/2017   23:05:59  (  80.87, 142.88)    1.14                75
 04/12/2017   23:55:44   ( -80.87, -49.67) 04/12/2017   23:56:44  ( -80.87, -49.74)    1.30                60
 04/13/2017   00:46:45   (  80.87, 117.56) 04/13/2017   00:47:29  (  80.87, 117.47)    1.55                44
 04/13/2017   01:37:46   ( -80.87, -75.30) 04/13/2017   01:38:14  ( -80.87, -75.15)    2.69                28
 04/13/2017   02:28:47   (  80.87,  91.93) 04/13/2017   02:28:59  (  80.87,  92.07)    2.62                12
 04/13/2017   03:19:47   ( -80.87,-100.56) 04/13/2017   03:19:44  ( -80.87,-100.55)    0.40                 3
 04/13/2017   04:10:48   (  80.87,  66.66) 04/13/2017   04:10:29  (  80.87,  66.67)    0.23                19
 04/13/2017   05:01:48   ( -80.88,-125.81) 04/13/2017   05:01:14  ( -80.87,-125.95)    2.56                34
 04/13/2017   05:52:49   (  80.88,  41.40) 04/13/2017   05:51:59  (  80.87,  41.26)    2.42                50