Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2020 12 20.  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)
 12/21/2020   11:24:59   (  79.45, -94.83) 12/21/2020   11:24:12  (  79.44, -94.92)    2.11                47
 12/21/2020   12:14:19   ( -79.72,  74.73) 12/21/2020   12:14:49  ( -79.72,  74.72)    0.10                30
 12/24/2020   03:41:24   (  79.57,  21.89) 12/24/2020   03:41:03  (  79.57,  21.88)    0.36                21
 12/24/2020   04:30:44   ( -79.83,-168.50) 12/24/2020   04:31:40  ( -79.84,-168.41)    1.79                56
 12/26/2020   19:08:33   ( -79.35, -31.35) 12/26/2020   19:07:21  ( -79.35, -31.42)    1.53                72
 12/26/2020   19:57:50   (  79.68, 138.59) 12/26/2020   19:57:55  (  79.69, 138.68)    1.97                 5
 12/29/2020   11:24:58   ( -79.50,  85.55) 12/29/2020   11:24:12  ( -79.51,  85.61)    1.36                46
 12/29/2020   12:14:18   (  79.71,-105.28) 12/29/2020   12:14:50  (  79.71,-105.36)    1.58                32
 01/01/2021   03:41:25   ( -79.57,-158.09) 01/01/2021   03:41:06  ( -79.56,-158.16)    1.62                19