Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 5 10.  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)
 05/12/2019   03:41:37   (  79.45,  20.99) 05/12/2019   03:41:26  (  79.44,  20.95)    0.83                11
 05/12/2019   04:30:56   ( -79.75,-169.22) 05/12/2019   04:32:02  ( -79.75,-169.07)    3.07                66
 05/14/2019   19:08:45   ( -79.23, -32.21) 05/14/2019   19:07:45  ( -79.22, -32.32)    2.56                60
 05/14/2019   19:58:03   (  79.53, 137.46) 05/14/2019   19:58:20  (  79.53, 137.44)    0.32                17
 05/17/2019   11:25:10   ( -79.35,  84.48) 05/17/2019   11:24:38  ( -79.35,  84.40)    1.80                32
 05/17/2019   12:14:28   (  79.65,-105.83) 05/17/2019   12:15:13  (  79.65,-105.79)    0.80                45
 05/20/2019   03:41:34   ( -79.47,-158.85) 05/20/2019   03:41:30  ( -79.47,-158.87)    0.53                 4
 05/20/2019   04:30:53   (  79.72,  10.59) 05/20/2019   04:32:06  (  79.73,  10.70)    2.38                73
 05/22/2019   19:08:40   (  79.26, 148.00) 05/22/2019   19:07:47  (  79.26, 147.93)    1.63                53