Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 5.  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,  -8.60) 07/06/2021   00:25:25  ( -69.15,  -7.44)   46.64                70
 07/06/2021   01:14:50   (  68.61, 159.54) 07/06/2021   01:15:00  (  68.59, 159.51)    2.60                10
 07/06/2021   02:05:31   ( -68.48, -32.97) 07/06/2021   02:04:30  ( -68.48, -32.99)    1.27                61
 07/08/2021   16:41:03   ( -68.72, 107.85) 07/08/2021   16:41:59  ( -68.71, 107.89)    2.26                56
 07/08/2021   17:31:47   (  68.60, -84.68) 07/08/2021   17:31:26  (  68.60, -84.61)    2.79                21
 07/08/2021   18:22:16   ( -67.82,  83.64) 07/08/2021   18:21:07  ( -67.88,  82.17)   62.07                69
 07/11/2021   08:07:35   (  69.70,  54.92) 07/11/2021   08:08:41  (  69.59,  57.28)   91.88                66
 07/11/2021   08:57:59   ( -68.65,-136.29) 07/11/2021   08:58:26  ( -68.66,-136.30)    0.34                27
 07/11/2021   09:48:43   (  68.53,  31.18) 07/11/2021   09:47:53  (  68.54,  31.20)    1.31                50
 07/14/2021   00:24:13   (  68.73, 172.06) 07/14/2021   00:25:21  (  68.75, 172.07)    3.04                68
 07/14/2021   01:14:54   ( -68.58, -20.44) 07/14/2021   01:14:52  ( -68.60, -20.49)    2.63                 2
 07/14/2021   02:05:34   (  68.24, 147.31) 07/14/2021   02:04:22  (  68.31, 146.80)   22.00                72
 07/16/2021   16:41:10   (  68.71, -72.16) 07/16/2021   16:41:48  (  68.68, -72.13)    3.22                38
 07/16/2021   17:31:51   ( -68.57,  95.35) 07/16/2021   17:31:18  ( -68.59,  95.38)    2.44                33