Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 1 9.  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)
 01/11/2018   01:18:16   ( -80.68, -67.11) 01/11/2018   01:19:28  ( -80.68, -67.14)    0.54                72
 01/11/2018   02:09:13   (  80.68, 100.03) 01/11/2018   02:10:13  (  80.68, 100.21)    3.19                60
 01/11/2018   03:00:17   ( -80.69, -92.50) 01/11/2018   03:00:58  ( -80.69, -92.57)    1.27                41
 01/11/2018   03:51:14   (  80.68,  74.64) 01/11/2018   03:51:43  (  80.69,  74.78)    2.52                29
 01/11/2018   04:42:18   ( -80.69,-117.88) 01/11/2018   04:42:28  ( -80.69,-117.99)    2.01                10
 01/11/2018   05:33:15   (  80.69,  49.26) 01/11/2018   05:33:13  (  80.69,  49.36)    1.85                 2
 01/11/2018   06:24:19   ( -80.70,-143.26) 01/11/2018   06:23:58  ( -80.69,-143.41)    2.76                21
 01/11/2018   07:15:16   (  80.69,  23.87) 01/11/2018   07:14:43  (  80.69,  23.94)    1.20                33
 01/11/2018   08:06:21   ( -80.69,-169.00) 01/11/2018   08:05:28  ( -80.70,-168.83)    3.06                53