Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2021 1 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)
 01/22/2021   11:24:55   (  79.49, -94.51) 01/22/2021   11:24:15  (  79.48, -94.62)    2.49                40
 01/22/2021   12:14:15   ( -79.75,  75.07) 01/22/2021   12:14:52  ( -79.76,  75.09)    0.58                37
 01/25/2021   03:41:20   (  79.64,  22.49) 01/25/2021   03:41:05  (  79.65,  22.61)    2.45                15
 01/25/2021   04:30:42   ( -79.80,-168.70) 01/25/2021   04:31:45  ( -79.80,-168.75)    0.96                63
 01/27/2021   19:08:28   ( -79.43, -30.76) 01/27/2021   19:07:22  ( -79.43, -30.82)    1.23                66
 01/27/2021   19:57:46   (  79.72, 138.94) 01/27/2021   19:57:57  (  79.72, 139.01)    1.39                11
 01/30/2021   11:24:55   ( -79.51,  85.65) 01/30/2021   11:24:15  ( -79.50,  85.56)    1.96                40
 01/30/2021   12:14:13   (  79.79,-104.63) 01/30/2021   12:14:50  (  79.79,-104.59)    0.80                37
 02/02/2021   03:41:22   ( -79.58,-157.97) 02/02/2021   03:41:08  ( -79.57,-158.08)    2.28                14