Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 7 12.  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   05:18:59   ( -80.81,-129.54) 07/17/2017   05:20:11  ( -80.81,-129.69)    2.66                72
 07/17/2017   06:10:05   (  80.81,  37.66) 07/17/2017   06:10:56  (  80.82,  37.58)    1.37                51
 07/17/2017   07:01:01   ( -80.81,-155.21) 07/17/2017   07:01:41  ( -80.82,-155.11)    1.94                40
 07/17/2017   07:52:07   (  80.81,  11.99) 07/17/2017   07:52:26  (  80.82,  12.17)    3.26                19
 07/17/2017   08:43:02   ( -80.82, 179.49) 07/17/2017   08:43:11  ( -80.82, 179.47)    0.39                 9
 07/17/2017   09:34:08   (  80.81, -13.31) 07/17/2017   09:33:56  (  80.82, -13.25)    1.23                12
 07/17/2017   10:25:03   ( -80.82, 154.18) 07/17/2017   10:24:41  ( -80.82, 154.06)    2.20                22
 07/17/2017   11:16:09   (  80.82, -38.61) 07/17/2017   11:15:26  (  80.82, -38.67)    1.01                43
 07/17/2017   12:07:05   ( -80.82, 128.52) 07/17/2017   12:06:11  ( -80.82, 128.64)    2.37                54