Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 4 29.  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,  68.48) 05/10/2017   04:04:13  (  80.85,  68.55)    1.59                71
 05/10/2017   04:54:08   ( -80.85,-124.17) 05/10/2017   04:54:58  ( -80.86,-124.16)    0.75                50
 05/10/2017   05:45:03   (  80.85,  43.20) 05/10/2017   05:45:43  (  80.86,  43.14)    1.17                40
 05/10/2017   06:36:09   ( -80.85,-149.44) 05/10/2017   06:36:28  ( -80.86,-149.57)    2.24                19
 05/10/2017   07:27:05   (  80.85,  17.56) 05/10/2017   07:27:13  (  80.86,  17.74)    3.26                 8
 05/10/2017   08:18:11   ( -80.85,-175.08) 05/10/2017   08:17:58  ( -80.86,-174.98)    2.06                13
 05/10/2017   09:09:06   (  80.85,  -7.71) 05/10/2017   09:08:43  (  80.86,  -7.67)    0.95                23
 05/10/2017   10:00:12   ( -80.86, 159.64) 05/10/2017   09:59:28  ( -80.86, 159.61)    0.66                44
 05/10/2017   10:51:07   (  80.86, -32.99) 05/10/2017   10:50:13  (  80.86, -33.08)    1.67                54