Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 6 15.  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   (  79.45, -94.79) 06/15/2021   11:24:26  (  79.46, -94.67)    2.66                22
 06/15/2021   12:14:10   ( -79.64,  74.19) 06/15/2021   12:15:06  ( -79.64,  74.17)    0.48                56
 06/18/2021   02:51:58   ( -79.20,-148.21) 06/18/2021   02:50:47  ( -79.20,-148.26)    1.10                71
 06/18/2021   03:41:15   (  79.54,  21.72) 06/18/2021   03:41:21  (  79.54,  21.80)    1.64                 6
 06/20/2021   19:08:25   ( -79.29, -31.75) 06/20/2021   19:07:42  ( -79.28, -31.83)    1.86                43
 06/20/2021   19:57:43   (  79.59, 137.93) 06/20/2021   19:58:17  (  79.59, 137.98)    1.11                34
 06/23/2021   11:24:51   ( -79.37,  84.69) 06/23/2021   11:24:36  ( -79.37,  84.59)    2.14                15
 06/23/2021   12:14:09   (  79.67,-105.61) 06/23/2021   12:15:11  (  79.67,-105.56)    1.07                62
 06/26/2021   02:51:55   (  79.29,  32.36) 06/26/2021   02:50:50  (  79.29,  32.45)    1.96                65
 06/26/2021   03:41:17   ( -79.49,-158.64) 06/26/2021   03:41:30  ( -79.48,-158.72)    1.90                13
 06/28/2021   19:08:21   (  79.40, 148.98) 06/28/2021   19:07:44  (  79.41, 149.11)    2.81                37