Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 25.  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)
 05/27/2018   19:58:22   (  79.55, 137.56) 05/27/2018   19:58:20  (  79.55, 137.67)    2.43                 2
 05/27/2018   20:46:40   ( -81.50, -31.95) 05/27/2018   20:47:54  ( -81.16, -31.42)   39.00                74
 05/30/2018   11:25:31   ( -79.28,  84.01) 05/30/2018   11:24:39  ( -79.27,  83.90)    2.25                52
 05/30/2018   12:14:48   (  79.61,-106.07) 05/30/2018   12:15:13  (  79.62,-105.95)    2.46                25
 06/02/2018   03:41:55   ( -79.39,-159.39) 06/02/2018   03:41:30  ( -79.38,-159.49)    2.30                25
 06/02/2018   04:31:12   (  79.72,  10.56) 06/02/2018   04:32:04  (  79.72,  10.70)    2.94                52
 06/04/2018   19:10:04   (  76.36, 134.87) 06/04/2018   19:08:51  (  76.53, 133.72)   35.39                73
 06/04/2018   19:58:20   ( -79.49, -42.80) 06/04/2018   19:58:22  ( -79.49, -42.88)    1.88                 2
 06/07/2018   11:25:25   (  79.31, -95.81) 06/07/2018   11:24:37  (  79.31, -95.85)    0.79                48