Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2019 9 21.  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, -85.21) 09/22/2019   10:34:30  (  79.01, -85.31)    2.18                64
 09/22/2019   11:24:52   ( -79.38,  84.71) 09/22/2019   11:25:05  ( -79.38,  84.73)    0.41                13
 09/25/2019   02:52:00   (  79.12,  31.31) 09/25/2019   02:51:21  (  79.12,  31.21)    1.99                39
 09/25/2019   03:41:19   ( -79.44,-158.97) 09/25/2019   03:41:57  ( -79.45,-158.96)    0.45                38
 09/27/2019   19:08:26   (  79.26, 148.05) 09/27/2019   19:08:12  (  79.25, 147.99)    1.35                14
 09/27/2019   19:57:46   ( -79.54, -42.42) 09/27/2019   19:58:49  ( -79.54, -42.39)    0.78                63
 09/30/2019   10:35:33   ( -79.13,  95.47) 09/30/2019   10:34:26  ( -79.14,  95.60)    2.75                67
 09/30/2019   11:24:53   (  79.35, -95.47) 09/30/2019   11:25:04  (  79.35, -95.48)    0.24                11
 10/03/2019   02:52:03   ( -79.10,-148.81) 10/03/2019   02:51:22  ( -79.10,-148.92)    2.39                41
 10/03/2019   03:41:19   (  79.48,  21.25) 10/03/2019   03:41:55  (  79.48,  21.32)    1.33                36
 10/05/2019   19:08:28   ( -79.23, -32.15) 10/05/2019   19:08:12  ( -79.23, -32.18)    0.73                16