Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 4 23.  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)
 05/01/2018   01:05:21   (  80.58, 117.64) 05/01/2018   01:06:27  (  80.57, 117.63)    1.21                66
 05/01/2018   01:56:21   ( -80.59, -75.01) 05/01/2018   01:57:12  ( -80.57, -75.04)    1.90                51
 05/01/2018   02:47:22   (  80.59,  92.21) 05/01/2018   02:47:57  (  80.58,  92.23)    1.36                35
 05/01/2018   03:38:22   ( -80.59,-100.43) 05/01/2018   03:38:42  ( -80.57,-100.44)    1.96                20
 05/01/2018   04:29:23   (  80.59,  66.77) 05/01/2018   04:29:27  (  80.58,  66.82)    1.69                 4
 05/01/2018   05:20:23   ( -80.59,-125.86) 05/01/2018   05:20:12  ( -80.58,-125.84)    2.10                11
 05/01/2018   06:11:24   (  80.59,  41.34) 05/01/2018   06:10:57  (  80.58,  41.42)    2.11                27
 05/01/2018   07:02:25   ( -80.58,-151.64) 05/01/2018   07:01:43  ( -80.60,-151.58)    2.17                42
 05/01/2018   07:53:25   (  80.60,  15.90) 05/01/2018   07:52:27  (  80.58,  16.01)    2.57                58