Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 16.  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)
 09/19/2017   02:51:48   (  79.24,  32.07) 09/19/2017   02:51:24  (  79.25,  32.17)    2.24                24
 09/19/2017   03:41:10   ( -79.44,-159.01) 09/19/2017   03:42:04  ( -79.43,-159.10)    1.88                54
 09/21/2017   18:19:58   ( -76.32, -32.87) 09/21/2017   18:18:44  ( -76.49, -33.76)   30.06                74
 09/21/2017   19:08:16   (  79.31, 148.42) 09/21/2017   19:08:18  (  79.31, 148.43)    0.18                 2
 09/24/2017   10:35:25   ( -79.15,  95.61) 09/24/2017   10:34:35  ( -79.15,  95.68)    1.58                50
 09/24/2017   11:24:45   (  79.38, -95.27) 09/24/2017   11:25:13  (  79.38, -95.32)    1.14                28
 09/27/2017   02:51:54   ( -79.21,-148.12) 09/27/2017   02:51:30  ( -79.22,-148.08)    0.80                24
 09/27/2017   03:41:14   (  79.44,  21.01) 09/27/2017   03:42:08  (  79.44,  20.93)    1.52                54
 09/29/2017   18:19:55   (  76.67, 148.28) 09/29/2017   18:18:41  (  76.84, 147.55)   26.27                74