Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 5 14.  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)
 05/14/2018   22:21:08   (  80.57, 158.99) 05/14/2018   22:21:32  (  80.56, 158.99)    1.23                24
 05/14/2018   23:12:12   ( -80.57, -33.87) 05/14/2018   23:12:17  ( -80.57, -33.78)    1.73                 5
 05/15/2018   00:03:09   (  80.58, 133.55) 05/15/2018   00:03:02  (  80.57, 133.58)    1.38                 7
 05/15/2018   00:54:13   ( -80.57, -59.31) 05/15/2018   00:53:47  ( -80.57, -59.18)    2.23                26
 05/15/2018   01:45:10   (  80.58, 108.12) 05/15/2018   01:44:32  (  80.57, 108.18)    1.74                38
 05/15/2018   02:36:14   ( -80.58, -84.74) 05/15/2018   02:35:17  ( -80.57, -84.59)    2.74                57
 05/15/2018   03:27:11   (  80.58,  82.68) 05/15/2018   03:26:02  (  80.57,  82.77)    2.20                69
 05/28/2018   14:30:54   (  80.50, -84.61) 05/28/2018   14:32:06  (  80.54, -83.29)   24.75                72
 05/28/2018   15:21:57   ( -80.55,  83.72) 05/28/2018   15:22:52  ( -80.56,  83.65)    1.98                55
 05/28/2018   16:12:52   (  80.55,-109.02) 05/28/2018   16:13:37  (  80.56,-109.03)    1.58                45
 05/28/2018   17:03:58   ( -80.55,  58.28) 05/28/2018   17:04:22  ( -80.57,  58.24)    1.64                24
 05/28/2018   17:54:53   (  80.55,-134.46) 05/28/2018   17:55:07  (  80.57,-134.44)    1.57                14
 05/28/2018   18:45:59   ( -80.56,  32.84) 05/28/2018   18:45:52  ( -80.57,  32.84)    1.45                 7
 05/28/2018   19:36:54   (  80.56,-159.90) 05/28/2018   19:36:37  (  80.57,-159.84)    1.80                17
 05/28/2018   20:28:00   ( -80.56,   7.40) 05/28/2018   20:27:22  ( -80.57,   7.43)    1.50                38
 05/28/2018   21:18:55   (  80.56, 174.66) 05/28/2018   21:18:07  (  80.57, 174.75)    2.18                48