Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 4 27.  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)
 05/10/2017   04:03:02   (  80.85,  68.50) 05/10/2017   04:04:13  (  80.85,  68.67)    3.10                71
 05/10/2017   04:54:08   ( -80.85,-124.14) 05/10/2017   04:54:58  ( -80.85,-124.03)    1.93                50
 05/10/2017   05:45:03   (  80.85,  43.22) 05/10/2017   05:45:43  (  80.85,  43.26)    0.80                40
 05/10/2017   06:36:09   ( -80.86,-149.41) 05/10/2017   06:36:28  ( -80.85,-149.44)    0.69                19
 05/10/2017   07:27:04   (  80.86,  17.95) 05/10/2017   07:27:13  (  80.85,  17.86)    1.74                 9
 05/10/2017   08:18:10   ( -80.86,-174.69) 05/10/2017   08:17:58  ( -80.85,-174.85)    2.95                12
 05/10/2017   09:09:06   (  80.85,  -7.70) 05/10/2017   09:08:43  (  80.85,  -7.55)    2.59                23
 05/10/2017   10:00:11   ( -80.86, 159.67) 05/10/2017   09:59:27  ( -80.85, 159.75)    1.40                44
 05/10/2017   10:51:06   (  80.86, -32.97) 05/10/2017   10:50:12  (  80.86, -32.96)    0.61                54