Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 6 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)
 06/19/2017   23:30:11   (  80.83, 137.35) 06/19/2017   23:31:24  (  80.83, 137.23)    2.08                73
 06/20/2017   00:21:12   ( -80.82, -55.61) 06/20/2017   00:22:09  ( -80.83, -55.56)    1.42                57
 06/20/2017   01:12:13   (  80.83, 111.70) 06/20/2017   01:12:54  (  80.83, 111.82)    2.24                41
 06/20/2017   02:03:13   ( -80.83, -80.90) 06/20/2017   02:03:39  ( -80.84, -80.97)    1.33                26
 06/20/2017   02:54:14   (  80.83,  86.41) 06/20/2017   02:54:24  (  80.83,  86.41)    0.12                10
 06/20/2017   03:45:14   ( -80.84,-106.20) 06/20/2017   03:45:09  ( -80.84,-106.38)    3.27                 5
 06/20/2017   04:36:15   (  80.84,  61.12) 06/20/2017   04:35:54  (  80.83,  60.99)    2.29                21
 06/20/2017   05:27:16   ( -80.83,-131.86) 06/20/2017   05:26:39  ( -80.84,-131.79)    1.47                37
 06/20/2017   06:18:17   (  80.83,  35.47) 06/20/2017   06:17:24  (  80.84,  35.58)    2.02                53