Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 12 9.  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)
 12/11/2021   02:02:37   (  79.27,  44.69) 12/11/2021   02:01:30  (  79.26,  44.55)    2.95                67
 12/11/2021   02:51:57   ( -79.55,-145.82) 12/11/2021   02:52:07  ( -79.54,-145.93)    2.17                10
 12/13/2021   18:19:02   (  79.46, 161.81) 12/13/2021   18:18:16  (  79.47, 161.94)    2.89                46
 12/13/2021   19:08:25   ( -79.62, -29.43) 12/13/2021   19:08:57  ( -79.61, -29.56)    2.67                32
 12/16/2021   10:35:29   (  79.56, -81.60) 12/16/2021   10:35:05  (  79.57, -81.46)    3.09                24
 12/16/2021   11:24:53   ( -79.68,  86.91) 12/16/2021   11:25:47  ( -79.68,  86.79)    2.44                54
 12/19/2021   02:51:59   (  79.54,  34.14) 12/19/2021   02:51:58  (  79.53,  34.03)    2.40                 1
 12/19/2021   03:40:09   ( -81.61,-132.07) 12/19/2021   03:41:23  ( -81.25,-131.66)   40.61                74
 12/21/2021   18:19:05   ( -79.42, -18.50) 12/21/2021   18:18:08  ( -79.42, -18.42)    1.68                57