Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 12 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)
 12/13/2021   18:19:02   (  79.46, 161.80) 12/13/2021   18:18:16  (  79.47, 161.93)    2.95                46
 12/13/2021   19:08:25   ( -79.61, -29.47) 12/13/2021   19:08:57  ( -79.61, -29.59)    2.59                32
 12/16/2021   10:35:32   (  79.45, -82.40) 12/16/2021   10:35:09  (  79.44, -82.55)    3.13                23
 12/16/2021   11:24:53   ( -79.68,  86.89) 12/16/2021   11:25:47  ( -79.67,  86.77)    2.27                54
 12/19/2021   02:51:59   (  79.54,  34.14) 12/19/2021   02:51:58  (  79.53,  34.05)    2.05                 1
 12/19/2021   03:40:06   ( -81.65,-130.87) 12/19/2021   03:41:20  ( -81.27,-130.50)   42.31                74
 12/21/2021   18:19:05   ( -79.41, -18.50) 12/21/2021   18:18:08  ( -79.42, -18.40)    2.24                57
 12/21/2021   19:08:25   (  79.63, 150.66) 12/21/2021   19:08:46  (  79.63, 150.64)    0.25                21
 12/24/2021   10:35:34   ( -79.42,  97.45) 12/24/2021   10:35:00  ( -79.42,  97.38)    1.52                34