Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 19.  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)
 05/19/2015   16:41:49   (  78.14, 178.73) 05/19/2015   16:40:51  (  78.13, 178.67)    1.39                58
 05/19/2015   17:31:05   ( -78.62, -11.21) 05/19/2015   17:31:24  ( -78.61, -11.28)    1.89                19
 05/22/2015   08:58:07   (  78.44, -63.90) 05/22/2015   08:57:38  (  78.44, -63.85)    1.14                29
 05/22/2015   09:47:24   ( -78.87, 106.06) 05/22/2015   09:48:12  ( -78.87, 106.10)    0.88                48
 05/25/2015   00:26:55   ( -73.13,-132.34) 05/25/2015   00:25:41  ( -73.33,-133.41)   40.76                74
 05/25/2015   01:14:26   (  78.66,  53.13) 05/25/2015   01:14:27  (  78.66,  53.23)    2.25                 1
 05/25/2015   02:00:26   ( -80.67, -64.54) 05/25/2015   02:01:39  ( -79.94, -66.98)   93.76                73
 05/27/2015   16:41:35   ( -78.18,  -1.05) 05/27/2015   16:40:50  ( -78.17,  -1.17)    3.02                45
 05/27/2015   17:30:44   (  78.83, 170.00) 05/27/2015   17:31:16  (  78.84, 170.09)    1.93                32
 05/30/2015   08:57:48   ( -78.54, 116.65) 05/30/2015   08:57:34  ( -78.54, 116.71)    1.41                14
 05/30/2015   09:47:04   (  78.93, -73.54) 05/30/2015   09:48:08  (  78.93, -73.54)    0.15                64
 06/02/2015   00:24:51   (  78.15,  63.01) 06/02/2015   00:23:53  (  78.14,  62.92)    2.28                58