Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 1 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)
 01/22/2019   19:08:32   ( -79.53, -30.00) 01/22/2019   19:07:58  ( -79.53, -30.07)    1.49                34
 01/22/2019   19:57:50   (  79.82, 139.80) 01/22/2019   19:58:33  (  79.83, 139.88)    1.72                43
 01/25/2019   11:24:59   ( -79.64,  86.64) 01/25/2019   11:24:49  ( -79.64,  86.61)    0.72                10
 01/25/2019   12:14:18   (  79.89,-103.82) 01/25/2019   12:15:25  (  79.90,-103.68)    2.93                67
 01/28/2019   02:52:06   (  79.47,  33.68) 01/28/2019   02:51:03  (  79.47,  33.63)    1.08                63
 01/28/2019   03:41:26   ( -79.74,-156.72) 01/28/2019   03:41:40  ( -79.74,-156.70)    0.38                14
 01/30/2019   19:08:32   (  79.57, 150.26) 01/30/2019   19:07:53  (  79.57, 150.28)    0.63                39
 01/30/2019   19:57:53   ( -79.80, -40.37) 01/30/2019   19:58:31  ( -79.81, -40.29)    1.75                38
 02/02/2019   11:24:58   (  79.70, -92.90) 02/02/2019   11:24:43  (  79.71, -92.77)    2.58                15