Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 4 11.  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)
 04/12/2019   19:58:27   (  79.40, 136.51) 04/12/2019   19:58:01  (  79.39, 136.38)    2.91                26
 04/12/2019   20:47:46   ( -79.70, -53.73) 04/12/2019   20:48:37  ( -79.71, -53.68)    0.96                51
 04/15/2019   11:25:58   ( -77.99,  76.99) 04/15/2019   11:24:44  ( -78.10,  76.48)   16.62                74
 04/15/2019   12:14:47   (  79.51,-106.89) 04/15/2019   12:14:50  (  79.50,-107.02)    3.01                 3
 04/18/2019   03:41:47   ( -79.42,-159.21) 04/18/2019   03:41:01  ( -79.43,-159.13)    1.68                46
 04/18/2019   04:31:09   (  79.57,   9.43) 04/18/2019   04:31:41  (  79.56,   9.30)    2.65                32
 04/20/2019   19:58:08   ( -79.52, -42.65) 04/20/2019   19:57:51  ( -79.52, -42.54)    2.46                17
 04/20/2019   20:47:30   (  79.66, 125.99) 04/20/2019   20:48:31  (  79.66, 125.90)    1.86                61
 04/23/2019   11:25:10   (  79.29, -95.89) 04/23/2019   11:24:05  (  79.29, -95.91)    0.41                65