Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2022 4 18.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/19/2022   11:06:03   ( -71.69,-167.46) 04/19/2022   11:07:13  ( -71.57,-166.33)   41.50                70
 04/19/2022   11:56:40   (  71.19,   0.75) 04/19/2022   11:56:45  (  71.21,   0.72)    2.39                 5
 04/19/2022   12:47:23   ( -71.11, 168.21) 04/19/2022   12:46:15  ( -71.09, 168.16)    2.81                68
 04/22/2022   02:33:03   (  71.34, 141.42) 04/22/2022   02:34:15  (  71.31, 141.47)    3.99                72
 04/22/2022   03:23:45   ( -71.20, -51.01) 04/22/2022   03:23:45  ( -71.19, -51.08)    2.79                 0
 04/22/2022   04:14:26   (  70.90, 116.80) 04/22/2022   04:13:14  (  70.98, 116.23)   22.31                72
 04/24/2022   18:00:09   ( -71.35,  89.67) 04/24/2022   18:01:15  ( -71.33,  89.73)    2.84                66
 04/24/2022   18:50:53   (  71.22,-102.80) 04/24/2022   18:50:42  (  71.23,-102.79)    1.40                11
 04/24/2022   19:41:29   ( -70.75,  65.30) 04/24/2022   19:40:18  ( -70.79,  64.16)   41.78                71
 04/27/2022   09:27:16   (  71.33,  37.94) 04/27/2022   09:28:12  (  71.35,  38.00)    3.44                56
 04/27/2022   10:17:59   ( -71.22,-154.56) 04/27/2022   10:17:42  ( -71.24,-154.54)    2.21                17
 04/27/2022   11:08:29   (  70.37,  14.17) 04/27/2022   11:07:22  (  70.42,  11.86)   86.66                67
 04/30/2022   00:54:22   ( -71.33, -13.81) 04/30/2022   00:55:12  ( -71.35, -13.77)    2.56                50
 04/30/2022   01:45:06   (  71.21, 153.70) 04/30/2022   01:44:39  (  71.24, 153.70)    2.61                27