Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 4 13.  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)
 04/15/2019   11:25:25   ( -79.37,  84.53) 04/15/2019   11:24:17  ( -79.37,  84.66)    2.75                68
 04/15/2019   12:14:46   (  79.56,-106.54) 04/15/2019   12:14:56  (  79.55,-106.59)    1.00                10
 04/18/2019   03:41:49   ( -79.35,-159.67) 04/18/2019   03:41:15  ( -79.35,-159.80)    2.94                34
 04/18/2019   04:31:07   (  79.65,  10.04) 04/18/2019   04:31:50  (  79.65,  10.03)    0.26                43
 04/20/2019   19:58:09   ( -79.49, -42.86) 04/20/2019   19:58:08  ( -79.48, -42.94)    1.73                 1
 04/20/2019   20:45:43   (  81.85, 165.41) 04/20/2019   20:46:56  (  81.27, 165.36)   64.13                73
 04/23/2019   11:25:06   (  79.42, -95.07) 04/23/2019   11:24:20  (  79.42, -94.96)    2.17                46
 04/23/2019   12:14:28   ( -79.61,  73.93) 04/23/2019   12:15:00  ( -79.61,  73.93)    0.02                32
 04/26/2019   03:41:29   (  79.43,  20.89) 04/26/2019   03:41:17  (  79.42,  20.79)    2.10                12