Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 4 16.  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)
 04/17/2018   06:22:29   ( -80.59,-141.97) 04/17/2018   06:23:36  ( -80.59,-141.88)    1.64                67
 04/17/2018   07:13:33   (  80.59,  25.35) 04/17/2018   07:14:21  (  80.59,  25.41)    1.13                48
 04/17/2018   08:04:30   ( -80.59,-167.40) 04/17/2018   08:05:06  ( -80.59,-167.29)    2.04                36
 04/17/2018   08:55:34   (  80.60,  -0.07) 04/17/2018   08:55:51  (  80.59,   0.01)    1.59                17
 04/17/2018   09:46:31   ( -80.60, 167.18) 04/17/2018   09:46:36  ( -80.59, 167.31)    2.44                 5
 04/17/2018   10:37:35   (  80.60, -25.50) 04/17/2018   10:37:21  (  80.59, -25.40)    2.06                14
 04/17/2018   11:28:32   ( -80.60, 141.76) 04/17/2018   11:28:06  ( -80.59, 141.91)    2.84                26
 04/17/2018   12:19:36   (  80.60, -50.93) 04/17/2018   12:18:51  (  80.60, -50.80)    2.52                45
 04/17/2018   13:10:33   ( -80.60, 116.34) 04/17/2018   13:09:36  ( -80.60, 116.51)    3.25                57