Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 25.  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)
 03/27/2018   11:27:24   ( -74.69,  66.02) 03/27/2018   11:26:11  ( -74.95,  64.29)   57.72                73
 03/27/2018   12:14:59   (  79.69,-105.43) 03/27/2018   12:15:00  (  79.69,-105.42)    0.26                 1
 03/30/2018   03:42:05   ( -79.56,-158.14) 03/30/2018   03:41:16  ( -79.56,-158.11)    0.56                49
 03/30/2018   04:31:26   (  79.74,  10.80) 03/30/2018   04:31:55  (  79.72,  10.66)    2.93                29
 04/01/2018   19:58:32   ( -79.60, -41.95) 04/01/2018   19:58:11  ( -79.59, -42.03)    1.77                21
 04/01/2018   20:47:51   (  79.85, 127.56) 04/01/2018   20:48:47  (  79.85, 127.60)    0.93                56
 04/04/2018   11:25:37   (  79.44, -94.82) 04/04/2018   11:24:26  (  79.44, -94.86)    0.82                71
 04/04/2018   12:14:56   ( -79.75,  75.03) 04/04/2018   12:15:02  ( -79.76,  75.17)    2.91                 6
 04/07/2018   03:42:02   (  79.51,  21.56) 04/07/2018   03:41:19  (  79.51,  21.45)    2.33                43