Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 10 21.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2019   02:56:28   (  68.40, 134.56) 10/21/2019   02:56:31  (  68.39, 134.56)    1.25                 3
 10/21/2019   03:47:09   ( -68.27, -57.96) 10/21/2019   03:46:01  ( -68.28, -57.93)    2.09                68
 10/23/2019   18:22:38   ( -68.51,  82.88) 10/23/2019   18:23:34  ( -68.49,  82.91)    2.70                56
 10/23/2019   19:13:22   (  68.38,-109.65) 10/23/2019   19:13:01  (  68.37,-109.58)    2.93                21
 10/23/2019   20:03:51   ( -67.60,  58.64) 10/23/2019   20:02:42  ( -67.66,  57.22)   60.65                69
 10/26/2019   10:39:31   ( -68.43,-161.26) 10/26/2019   10:40:05  ( -68.44,-161.27)    1.04                34
 10/26/2019   11:30:15   (  68.31,   6.21) 10/26/2019   11:29:32  (  68.32,   6.23)    1.92                43
 10/29/2019   02:05:49   (  68.88, 146.60) 10/29/2019   02:07:00  (  68.79, 147.41)   33.54                71
 10/29/2019   02:56:24   ( -68.42, -45.47) 10/29/2019   02:56:35  ( -68.42, -45.42)    2.29                11
 10/29/2019   03:47:07   (  68.24, 122.07) 10/29/2019   03:46:03  (  68.24, 122.01)    2.37                64
 10/31/2019   18:22:36   (  68.49, -97.11) 10/31/2019   18:23:37  (  68.46, -97.13)    2.84                61
 10/31/2019   19:13:17   ( -68.35,  70.39) 10/31/2019   19:13:07  ( -68.37,  70.39)    2.95                10
 10/31/2019   20:03:52   (  67.74,-121.54) 10/31/2019   20:02:42  (  67.80,-122.64)   46.60                70
 11/03/2019   10:39:29   (  68.42,  18.74) 11/03/2019   10:40:09  (  68.44,  18.70)    2.04                40
 11/03/2019   11:30:11   ( -68.34,-173.83) 11/03/2019   11:29:39  ( -68.35,-173.77)    2.97                32