Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 4 20.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2019   19:58:13   ( -79.53, -42.62) 04/20/2019   19:58:06  ( -79.52, -42.62)    0.20                 7
 04/20/2019   20:47:33   (  79.75, 126.64) 04/20/2019   20:48:43  (  79.76, 126.73)    1.87                70
 04/23/2019   11:25:20   (  79.30, -95.90) 04/23/2019   11:24:24  (  79.29, -96.01)    2.56                56
 04/23/2019   12:14:39   ( -79.61,  73.84) 04/23/2019   12:15:00  ( -79.61,  73.92)    1.69                21
 04/26/2019   03:41:45   (  79.42,  20.76) 04/26/2019   03:41:17  (  79.41,  20.69)    1.53                28
 04/26/2019   04:31:04   ( -79.72,-169.44) 04/26/2019   04:31:53  ( -79.73,-169.30)    2.78                49
 04/28/2019   19:11:40   ( -71.04, -57.15) 04/28/2019   19:10:27  ( -71.41, -59.39)   90.11                73
 04/28/2019   19:58:11   (  79.49, 137.15) 04/28/2019   19:58:11  (  79.49, 137.09)    1.12                 0
 05/01/2019   11:25:17   ( -79.30,  84.13) 05/01/2019   11:24:28  ( -79.29,  83.99)    2.91                49