Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 12 15.  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)
 12/28/2017   09:08:02   ( -80.69, 175.11) 12/28/2017   09:09:03  ( -80.70, 175.21)    2.33                61
 12/28/2017   09:59:01   (  80.70, -17.37) 12/28/2017   09:59:47  (  80.69, -17.21)    3.21                46
 12/28/2017   10:50:03   ( -80.70, 149.73) 12/28/2017   10:50:33  ( -80.71, 149.79)    1.61                30
 12/28/2017   11:41:02   (  80.71, -42.75) 12/28/2017   11:41:17  (  80.69, -42.63)    2.70                15
 12/28/2017   12:32:04   ( -80.70, 124.36) 12/28/2017   12:32:03  ( -80.71, 124.37)    1.05                 1
 12/28/2017   13:23:03   (  80.71, -68.13) 12/28/2017   13:22:47  (  80.69, -68.05)    2.30                16
 12/28/2017   14:14:05   ( -80.71,  98.98) 12/28/2017   14:13:33  ( -80.71,  98.95)    1.00                32
 12/28/2017   15:05:05   (  80.70, -93.87) 12/28/2017   15:04:18  (  80.72, -93.82)    2.04                47
 12/28/2017   15:56:06   ( -80.71,  73.60) 12/28/2017   15:55:03  ( -80.72,  73.53)    1.51                63