Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 6 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)
 06/15/2021   11:24:48   (  79.47, -94.68) 06/15/2021   11:24:26  (  79.47, -94.56)    2.61                22
 06/15/2021   12:14:10   ( -79.66,  74.32) 06/15/2021   12:15:06  ( -79.65,  74.29)    0.68                56
 06/18/2021   02:51:58   ( -79.22,-148.09) 06/18/2021   02:50:47  ( -79.21,-148.15)    1.43                71
 06/18/2021   03:41:16   (  79.52,  21.57) 06/18/2021   03:41:22  (  79.52,  21.63)    1.37                 6
 06/20/2021   19:08:25   ( -79.27, -31.88) 06/20/2021   19:07:42  ( -79.26, -31.99)    2.50                43
 06/20/2021   19:57:42   (  79.60, 138.05) 06/20/2021   19:58:16  (  79.60, 138.08)    0.55                34
 06/23/2021   11:24:52   ( -79.35,  84.56) 06/23/2021   11:24:37  ( -79.35,  84.41)    3.19                15
 06/23/2021   12:14:10   (  79.65,-105.76) 06/23/2021   12:15:12  (  79.65,-105.76)    0.25                62
 06/26/2021   02:51:56   (  79.27,  32.23) 06/26/2021   02:50:51  (  79.27,  32.25)    0.42                65