Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 4 28.  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,  68.45) 05/10/2017   04:04:13  (  80.86,  68.51)    1.64                71
 05/10/2017   04:54:08   ( -80.85,-124.20) 05/10/2017   04:54:58  ( -80.86,-124.20)    1.02                50
 05/10/2017   05:45:03   (  80.85,  43.17) 05/10/2017   05:45:43  (  80.86,  43.10)    1.53                40
 05/10/2017   06:36:09   ( -80.85,-149.47) 05/10/2017   06:36:28  ( -80.86,-149.61)    2.54                19
 05/10/2017   07:27:04   (  80.86,  17.90) 05/10/2017   07:27:12  (  80.84,  18.05)    3.11                 8
 05/10/2017   08:18:11   ( -80.85,-175.11) 05/10/2017   08:17:58  ( -80.86,-175.02)    1.98                13
 05/10/2017   09:09:06   (  80.85,  -7.74) 05/10/2017   09:08:43  (  80.86,  -7.72)    1.07                23
 05/10/2017   10:00:12   ( -80.86, 159.62) 05/10/2017   09:59:28  ( -80.86, 159.58)    1.03                44
 05/10/2017   10:51:07   (  80.86, -33.02) 05/10/2017   10:50:13  (  80.86, -33.12)    1.95                54