Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 7 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)
 07/23/2019   02:52:00   (  79.22,  31.90) 07/23/2019   02:51:15  (  79.22,  31.85)    1.15                45
 07/23/2019   03:41:20   ( -79.50,-158.60) 07/23/2019   03:41:52  ( -79.50,-158.61)    0.15                32
 07/25/2019   19:08:25   (  79.34, 148.58) 07/25/2019   19:08:06  (  79.35, 148.60)    0.58                19
 07/25/2019   19:57:45   ( -79.62, -41.88) 07/25/2019   19:58:43  ( -79.62, -41.79)    1.78                58
 07/28/2019   10:35:35   ( -79.09,  95.19) 07/28/2019   10:34:25  ( -79.08,  95.10)    1.94                70
 07/28/2019   11:24:51   (  79.46, -94.73) 07/28/2019   11:24:58  (  79.47, -94.63)    2.19                 7
 07/31/2019   02:52:01   ( -79.21,-148.15) 07/31/2019   02:51:17  ( -79.21,-148.17)    0.44                44
 07/31/2019   03:41:20   (  79.47,  21.18) 07/31/2019   03:41:54  (  79.46,  21.06)    2.76                34
 08/02/2019   19:08:27   ( -79.34, -31.48) 08/02/2019   19:08:09  ( -79.34, -31.43)    1.11                18