Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 5 7.  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)
 05/08/2021   09:47:54   (  68.60,  31.23) 05/08/2021   09:48:57  (  68.60,  31.26)    1.23                63
 05/08/2021   10:38:35   ( -68.47,-161.27) 05/08/2021   10:38:27  ( -68.48,-161.25)    2.12                 8
 05/08/2021   11:29:12   (  67.96,   6.69) 05/08/2021   11:28:01  (  67.98,   5.80)   37.08                71
 05/11/2021   02:04:51   (  68.58, 147.03) 05/11/2021   02:05:24  (  68.56, 147.10)    3.23                33
 05/11/2021   02:55:32   ( -68.44, -45.47) 05/11/2021   02:54:54  ( -68.46, -45.40)    3.33                38
 05/13/2021   17:31:09   ( -68.94,  95.00) 05/13/2021   17:32:21  ( -68.81,  95.64)   29.52                72
 05/13/2021   18:21:47   (  68.50, -97.11) 05/13/2021   18:21:51  (  68.53, -97.07)    3.10                 4
 05/13/2021   19:12:28   ( -68.36,  70.40) 05/13/2021   19:11:22  ( -68.37,  70.37)    1.69                66
 05/16/2021   09:48:00   ( -68.60,-148.78) 05/16/2021   09:48:51  ( -68.61,-148.74)    1.97                51
 05/16/2021   10:38:43   (  68.43,  18.75) 05/16/2021   10:38:19  (  68.43,  18.69)    2.46                24
 05/16/2021   11:29:10   ( -67.52,-172.80) 05/16/2021   11:28:02  ( -67.60,-174.64)   78.50                68
 05/19/2021   01:14:28   (  69.42, 158.53) 05/19/2021   01:15:36  (  69.27, 160.36)   73.46                68
 05/19/2021   02:04:55   ( -68.52, -32.91) 05/19/2021   02:05:18  ( -68.51, -32.97)    2.89                23
 05/19/2021   02:55:39   (  68.41, 134.54) 05/19/2021   02:54:45  (  68.38, 134.52)    2.91                54