Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 3.  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)
 07/03/2021   08:57:53   (  68.63,  43.75) 07/03/2021   08:58:33  (  68.64,  43.68)    2.81                40
 07/03/2021   09:48:35   ( -68.55,-148.82) 07/03/2021   09:48:03  ( -68.53,-148.82)    2.05                32
 07/06/2021   00:24:15   ( -69.22,  -8.60) 07/06/2021   00:25:25  ( -69.15,  -7.44)   46.65                70
 07/06/2021   01:14:50   (  68.62, 159.53) 07/06/2021   01:15:00  (  68.59, 159.51)    2.98                10
 07/06/2021   02:05:31   ( -68.48, -32.97) 07/06/2021   02:04:30  ( -68.48, -32.99)    1.32                61
 07/08/2021   16:41:03   ( -68.73, 107.84) 07/08/2021   16:41:59  ( -68.71, 107.89)    2.75                56
 07/08/2021   17:31:46   (  68.55, -84.61) 07/08/2021   17:31:27  (  68.54, -84.68)    3.10                19
 07/08/2021   18:22:16   ( -67.82,  83.64) 07/08/2021   18:21:07  ( -67.88,  82.17)   61.80                69
 07/11/2021   08:07:35   (  69.71,  54.90) 07/11/2021   08:08:41  (  69.59,  57.27)   92.67                66
 07/11/2021   08:57:59   ( -68.66,-136.31) 07/11/2021   08:58:26  ( -68.65,-136.30)    1.28                27
 07/11/2021   09:48:43   (  68.54,  31.16) 07/11/2021   09:47:53  (  68.53,  31.20)    1.84                50
 07/14/2021   00:24:13   (  68.75, 172.03) 07/14/2021   00:25:21  (  68.74, 172.06)    1.52                68
 07/14/2021   01:14:54   ( -68.60, -20.46) 07/14/2021   01:14:52  ( -68.59, -20.50)    2.04                 2
 07/14/2021   02:05:34   (  68.27, 147.28) 07/14/2021   02:04:22  (  68.30, 146.80)   20.30                72
 07/16/2021   16:41:09   (  68.69, -72.13) 07/16/2021   16:41:48  (  68.67, -72.14)    2.33                39
 07/16/2021   17:31:50   ( -68.55,  95.38) 07/16/2021   17:31:18  ( -68.58,  95.37)    3.34                32