Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 9 19.  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)
 09/22/2019   10:35:34   (  79.02, -85.20) 09/22/2019   10:34:30  (  79.01, -85.31)    2.30                64
 09/22/2019   11:24:52   ( -79.38,  84.73) 09/22/2019   11:25:05  ( -79.38,  84.74)    0.27                13
 09/25/2019   02:52:00   (  79.12,  31.32) 09/25/2019   02:51:21  (  79.12,  31.21)    2.37                39
 09/25/2019   03:41:19   ( -79.45,-158.95) 09/25/2019   03:41:57  ( -79.45,-158.95)    0.10                38
 09/27/2019   19:08:27   (  79.23, 147.83) 09/27/2019   19:08:13  (  79.22, 147.74)    2.14                14
 09/27/2019   19:57:46   ( -79.55, -42.38) 09/27/2019   19:58:49  ( -79.54, -42.38)    0.28                63
 09/30/2019   10:35:34   ( -79.10,  95.29) 09/30/2019   10:34:27  ( -79.10,  95.36)    1.45                67
 09/30/2019   11:24:54   (  79.32, -95.66) 09/30/2019   11:25:05  (  79.32, -95.74)    1.58                11
 10/03/2019   02:52:01   ( -79.20,-148.23) 10/03/2019   02:51:19  ( -79.20,-148.14)    2.00                42