Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 2 4.  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)
 02/17/2017   18:13:28   (  80.90,-144.50) 02/17/2017   18:14:37  (  80.89,-144.60)    2.01                69
 02/17/2017   19:04:27   ( -80.90,  22.78) 02/17/2017   19:05:22  ( -80.90,  22.63)    2.69                55
 02/17/2017   19:55:30   (  80.90,-170.11) 02/17/2017   19:56:07  (  80.89,-170.03)    1.50                37
 02/17/2017   20:46:29   ( -80.90,  -2.83) 02/17/2017   20:46:52  ( -80.90,  -2.79)    0.65                23
 02/17/2017   21:37:31   (  80.90, 164.66) 02/17/2017   21:37:37  (  80.90, 164.55)    2.27                 6
 02/17/2017   22:28:30   ( -80.91, -28.06) 02/17/2017   22:28:22  ( -80.90, -28.22)    2.78                 8
 02/17/2017   23:19:33   (  80.90, 139.06) 02/17/2017   23:19:07  (  80.90, 139.12)    1.07                26
 02/18/2017   00:10:32   ( -80.90, -53.67) 02/18/2017   00:09:52  ( -80.90, -53.64)    0.46                40
 02/18/2017   01:01:34   (  80.91, 113.83) 02/18/2017   01:00:37  (  80.90, 113.69)    2.56                57