Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 4 27.  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)
 04/28/2019   19:10:21   ( -75.15, -48.74) 04/28/2019   19:09:07  ( -75.41, -50.11)   48.13                74
 04/28/2019   19:58:10   (  79.52, 137.34) 04/28/2019   19:58:11  (  79.52, 137.38)    0.84                 1
 05/01/2019   11:25:15   ( -79.40,  84.78) 05/01/2019   11:24:27  ( -79.41,  84.93)    3.10                48
 05/01/2019   12:14:36   (  79.59,-106.28) 05/01/2019   12:15:06  (  79.58,-106.34)    1.33                30
 05/04/2019   03:41:40   ( -79.47,-158.85) 05/04/2019   03:41:21  ( -79.48,-158.79)    1.16                19
 05/04/2019   04:31:02   (  79.62,   9.82) 05/04/2019   04:32:01  (  79.61,   9.67)    3.15                59
 05/06/2019   19:08:45   (  79.30, 148.25) 05/06/2019   19:07:37  (  79.31, 148.34)    2.08                68
 05/06/2019   19:58:06   ( -79.54, -42.50) 05/06/2019   19:58:16  ( -79.54, -42.52)    0.54                10
 05/09/2019   11:25:10   (  79.40, -95.19) 05/09/2019   11:24:31  (  79.40, -95.15)    0.86                39