Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 9 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)
 09/22/2019   10:35:34   (  79.02, -85.20) 09/22/2019   10:34:30  (  79.01, -85.30)    2.26                64
 09/22/2019   11:24:52   ( -79.38,  84.73) 09/22/2019   11:25:05  ( -79.38,  84.75)    0.32                13
 09/25/2019   02:52:00   (  79.12,  31.32) 09/25/2019   02:51:21  (  79.12,  31.22)    2.29                39
 09/25/2019   03:41:19   ( -79.45,-158.95) 09/25/2019   03:41:57  ( -79.45,-158.95)    0.13                38
 09/27/2019   19:08:27   (  79.22, 147.83) 09/27/2019   19:08:13  (  79.22, 147.74)    2.01                14
 09/27/2019   19:57:46   ( -79.55, -42.39) 09/27/2019   19:58:49  ( -79.54, -42.38)    0.24                63
 09/30/2019   10:35:34   ( -79.10,  95.27) 09/30/2019   10:34:27  ( -79.10,  95.35)    1.63                67
 09/30/2019   11:24:54   (  79.32, -95.68) 09/30/2019   11:25:05  (  79.32, -95.75)    1.40                11
 10/03/2019   02:52:01   ( -79.19,-148.26) 10/03/2019   02:51:19  ( -79.20,-148.16)    2.25                42