Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 4 22.  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)
 04/23/2019   11:25:19   (  79.34, -95.64) 04/23/2019   11:24:23  (  79.34, -95.65)    0.28                56
 04/23/2019   12:14:41   ( -79.53,  73.31) 04/23/2019   12:15:03  ( -79.52,  73.17)    2.77                22
 04/26/2019   03:41:46   (  79.38,  20.51) 04/26/2019   03:41:19  (  79.37,  20.37)    3.02                27
 04/26/2019   04:31:05   ( -79.68,-169.72) 04/26/2019   04:31:55  ( -79.69,-169.67)    0.95                50
 04/28/2019   19:10:22   ( -75.13, -48.82) 04/28/2019   19:09:08  ( -75.39, -50.19)   48.42                74
 04/28/2019   19:58:10   (  79.53, 137.42) 04/28/2019   19:58:11  (  79.53, 137.47)    1.00                 1
 05/01/2019   11:25:17   ( -79.30,  84.13) 05/01/2019   11:24:30  ( -79.29,  83.99)    3.14                47
 05/01/2019   12:14:35   (  79.60,-106.20) 05/01/2019   12:15:05  (  79.60,-106.24)    1.06                30
 05/04/2019   03:41:40   ( -79.49,-158.75) 05/04/2019   03:41:21  ( -79.49,-158.67)    1.51                19