Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 7 9.  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)
 07/17/2017   05:19:00   ( -80.81,-129.73) 07/17/2017   05:20:12  ( -80.82,-129.88)    3.04                72
 07/17/2017   06:10:05   (  80.82,  37.82) 07/17/2017   06:10:56  (  80.81,  37.74)    1.95                51
 07/17/2017   07:01:01   ( -80.82,-155.03) 07/17/2017   07:01:41  ( -80.81,-154.94)    1.88                40
 07/17/2017   07:52:07   (  80.81,  12.16) 07/17/2017   07:52:26  (  80.81,  12.32)    2.95                19
 07/17/2017   08:43:02   ( -80.82, 179.67) 07/17/2017   08:43:11  ( -80.81, 179.65)    1.32                 9
 07/17/2017   09:34:08   (  80.82, -13.15) 07/17/2017   09:33:56  (  80.81, -13.10)    1.19                12
 07/17/2017   10:25:04   ( -80.82, 154.00) 07/17/2017   10:24:42  ( -80.83, 153.88)    2.65                22
 07/17/2017   11:16:09   (  80.83, -38.45) 07/17/2017   11:15:26  (  80.81, -38.51)    1.66                43
 07/17/2017   12:07:05   ( -80.82, 128.70) 07/17/2017   12:06:11  ( -80.81, 128.82)    2.28                54