Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 6 22.  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)
 06/23/2017   02:52:46   ( -77.13,-158.30) 06/23/2017   02:51:32  ( -77.27,-159.02)   23.72                74
 06/23/2017   03:41:20   (  79.35,  20.37) 06/23/2017   03:41:23  (  79.34,  20.24)    2.84                 3
 06/25/2017   19:08:26   ( -79.21, -32.29) 06/25/2017   19:07:36  ( -79.21, -32.27)    0.56                50
 06/25/2017   19:57:45   (  79.47, 137.06) 06/25/2017   19:58:13  (  79.47, 137.02)    0.92                28
 06/28/2017   11:24:52   ( -79.34,  84.40) 06/28/2017   11:24:27  ( -79.34,  84.50)    2.22                25
 06/28/2017   12:14:11   (  79.59,-106.23) 06/28/2017   12:15:04  (  79.59,-106.19)    0.90                53
 07/01/2017   02:54:02   (  73.27,  11.01) 07/01/2017   02:52:49  (  73.55,   9.27)   63.39                73
 07/01/2017   03:41:21   ( -79.34,-159.67) 07/01/2017   03:41:22  ( -79.34,-159.79)    2.55                 1
 07/03/2017   19:08:27   (  79.17, 147.45) 07/03/2017   19:07:36  (  79.17, 147.39)    1.39                51
 07/03/2017   19:57:47   ( -79.47, -42.98) 07/03/2017   19:58:13  ( -79.46, -43.02)    1.03                26
 07/06/2017   11:24:52   (  79.29, -95.89) 07/06/2017   11:24:26  (  79.29, -95.90)    0.10                26