Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 4 29.  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)
 04/30/2021   09:47:51   ( -68.89,-149.12) 04/30/2021   09:49:02  ( -68.81,-148.49)   26.98                71
 04/30/2021   10:38:30   (  68.49,  18.72) 04/30/2021   10:38:33  (  68.48,  18.75)    1.99                 3
 04/30/2021   11:29:11   ( -68.36,-173.79) 04/30/2021   11:28:03  ( -68.36,-173.75)    1.67                68
 05/03/2021   02:04:43   ( -68.59, -32.96) 05/03/2021   02:05:33  ( -68.57, -32.90)    3.24                50
 05/03/2021   02:55:26   (  68.41, 134.59) 05/03/2021   02:55:01  (  68.40, 134.54)    2.02                25
 05/03/2021   03:45:53   ( -67.52, -56.98) 05/03/2021   03:44:44  ( -67.57, -58.80)   77.32                69
 05/05/2021   17:31:11   (  69.35, -85.55) 05/05/2021   17:32:19  (  69.27, -83.77)   70.47                68
 05/05/2021   18:21:39   ( -68.51,  82.91) 05/05/2021   18:22:01  ( -68.50,  82.89)    1.97                22
 05/05/2021   19:12:23   (  68.39,-109.62) 05/05/2021   19:11:28  (  68.38,-109.61)    0.95                55
 05/08/2021   09:47:54   (  68.58,  31.27) 05/08/2021   09:48:58  (  68.57,  31.23)    1.98                64
 05/08/2021   10:38:36   ( -68.49,-161.29) 05/08/2021   10:38:28  ( -68.47,-161.27)    2.20                 8
 05/08/2021   11:29:12   (  67.93,   6.72) 05/08/2021   11:28:01  (  68.01,   5.84)   37.81                71
 05/11/2021   02:04:50   (  68.56, 147.06) 05/11/2021   02:05:24  (  68.53, 147.06)    3.14                34
 05/11/2021   02:55:31   ( -68.41, -45.43) 05/11/2021   02:54:54  ( -68.43, -45.43)    2.58                37
 05/13/2021   17:31:09   ( -68.98,  94.95) 05/13/2021   17:32:20  ( -68.83,  95.67)   32.67                71
 05/13/2021   18:21:46   (  68.49, -97.09) 05/13/2021   18:21:51  (  68.49, -97.11)    1.07                 5
 05/13/2021   19:12:28   ( -68.39,  70.36) 05/13/2021   19:11:21  ( -68.39,  70.40)    1.76                67