Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 16.  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)
 04/17/2017   11:25:13   (  79.36, -95.54) 04/17/2017   11:24:25  (  79.36, -95.45)    1.85                48
 04/17/2017   12:14:35   ( -79.55,  73.43) 04/17/2017   12:15:05  ( -79.55,  73.38)    0.91                30
 04/20/2017   03:41:39   (  79.42,  20.78) 04/20/2017   03:41:19  (  79.42,  20.82)    1.00                20
 04/20/2017   04:31:01   ( -79.61,-170.24) 04/20/2017   04:31:59  ( -79.61,-170.32)    1.79                58
 04/22/2017   19:08:45   ( -79.21, -32.33) 04/22/2017   19:07:36  ( -79.21, -32.39)    1.42                69
 04/22/2017   19:58:03   (  79.52, 137.31) 04/22/2017   19:58:11  (  79.52, 137.36)    0.92                 8
 04/25/2017   11:25:10   ( -79.31,  84.14) 04/25/2017   11:24:29  ( -79.30,  84.10)    0.92                41
 04/25/2017   12:14:28   (  79.60,-106.18) 04/25/2017   12:15:04  (  79.61,-106.11)    1.61                36
 04/28/2017   03:41:34   ( -79.43,-159.15) 04/28/2017   03:41:21  ( -79.43,-159.14)    0.34                13
 04/28/2017   04:30:53   (  79.69,  10.29) 04/28/2017   04:31:57  (  79.70,  10.43)    3.07                64
 04/30/2017   19:08:39   (  79.23, 147.77) 04/30/2017   19:07:37  (  79.23, 147.73)    0.77                62