Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 6.  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)
 04/09/2017   11:25:19   ( -79.28,  83.97) 04/09/2017   11:24:26  ( -79.28,  83.93)    0.78                53
 04/09/2017   12:14:37   (  79.58,-106.37) 04/09/2017   12:15:01  (  79.59,-106.29)    1.64                24
 04/12/2017   03:41:43   ( -79.44,-159.08) 04/12/2017   03:41:17  ( -79.45,-158.96)    2.53                26
 04/12/2017   04:31:04   (  79.62,   9.82) 04/12/2017   04:31:56  (  79.62,   9.76)    1.41                52
 04/14/2017   19:10:01   (  75.97, 133.56) 04/14/2017   19:08:48  (  76.15, 132.33)   38.86                73
 04/14/2017   19:58:09   ( -79.48, -42.93) 04/14/2017   19:58:11  ( -79.49, -42.92)    0.23                 2
 04/17/2017   11:25:13   (  79.35, -95.58) 04/17/2017   11:24:25  (  79.36, -95.50)    1.67                48
 04/17/2017   12:14:35   ( -79.55,  73.44) 04/17/2017   12:15:05  ( -79.55,  73.38)    1.34                30
 04/20/2017   03:41:39   (  79.42,  20.74) 04/20/2017   03:41:19  (  79.42,  20.78)    0.85                20