Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 15.  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   (  79.34, -95.62) 04/17/2017   11:24:25  (  79.35, -95.54)    1.79                48
 04/17/2017   12:14:35   ( -79.54,  73.34) 04/17/2017   12:15:05  ( -79.54,  73.29)    1.04                30
 04/20/2017   03:41:39   (  79.41,  20.69) 04/20/2017   03:41:19  (  79.41,  20.73)    0.87                20
 04/20/2017   04:31:01   ( -79.60,-170.32) 04/20/2017   04:31:59  ( -79.60,-170.41)    2.01                58
 04/22/2017   19:08:46   ( -79.20, -32.40) 04/22/2017   19:07:37  ( -79.20, -32.48)    1.76                69
 04/22/2017   19:58:04   (  79.51, 137.24) 04/22/2017   19:58:12  (  79.51, 137.27)    0.60                 8
 04/25/2017   11:25:11   ( -79.30,  84.09) 04/25/2017   11:24:30  ( -79.29,  84.02)    1.47                41
 04/25/2017   12:14:29   (  79.60,-106.24) 04/25/2017   12:15:05  (  79.60,-106.19)    1.07                36
 04/28/2017   03:41:34   ( -79.42,-159.19) 04/28/2017   03:41:21  ( -79.42,-159.21)    0.52                13