Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 4.  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)
 07/06/2021   00:24:15   ( -69.22,  -8.59) 07/06/2021   00:25:25  ( -69.15,  -7.43)   46.42                70
 07/06/2021   01:14:50   (  68.61, 159.54) 07/06/2021   01:15:00  (  68.60, 159.51)    1.68                10
 07/06/2021   02:05:31   ( -68.47, -32.96) 07/06/2021   02:04:30  ( -68.49, -32.98)    2.29                61
 07/08/2021   16:41:03   ( -68.72, 107.85) 07/08/2021   16:41:59  ( -68.72, 107.90)    1.81                56
 07/08/2021   17:31:46   (  68.54, -84.60) 07/08/2021   17:31:27  (  68.54, -84.67)    2.81                19
 07/08/2021   18:22:17   ( -67.87,  83.58) 07/08/2021   18:21:07  ( -67.88,  82.18)   58.78                70
 07/11/2021   08:07:35   (  69.70,  54.92) 07/11/2021   08:08:41  (  69.60,  57.28)   92.06                66
 07/11/2021   08:57:59   ( -68.65,-136.29) 07/11/2021   08:58:26  ( -68.66,-136.29)    1.00                27
 07/11/2021   09:48:43   (  68.53,  31.18) 07/11/2021   09:47:53  (  68.54,  31.21)    1.79                50
 07/14/2021   00:24:13   (  68.73, 172.05) 07/14/2021   00:25:21  (  68.76, 172.08)    2.97                68
 07/14/2021   01:14:54   ( -68.59, -20.44) 07/14/2021   01:14:52  ( -68.60, -20.48)    2.33                 2
 07/14/2021   02:05:34   (  68.25, 147.31) 07/14/2021   02:04:22  (  68.31, 146.81)   21.52                72
 07/16/2021   16:41:09   (  68.67, -72.10) 07/16/2021   16:41:48  (  68.69, -72.13)    2.23                39
 07/16/2021   17:31:51   ( -68.58,  95.34) 07/16/2021   17:31:18  ( -68.59,  95.38)    2.31                33