Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2022 1 30.  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)
 01/30/2022   06:54:51   ( -71.08,-104.23) 01/30/2022   06:56:03  ( -71.01,-103.76)   18.49                72
 01/30/2022   07:45:32   (  70.80,  63.56) 01/30/2022   07:45:32  (  70.81,  63.56)    0.54                 0
 01/30/2022   08:36:15   ( -70.70,-128.95) 01/30/2022   08:35:02  ( -70.69,-128.98)    1.49                73
 02/01/2022   22:21:58   (  70.92,-155.72) 02/01/2022   22:23:02  (  70.93,-155.65)    2.66                64
 02/01/2022   23:12:41   ( -70.82,  11.77) 02/01/2022   23:12:32  ( -70.81,  11.80)    1.52                 9
 02/02/2022   00:03:16   (  70.22,-179.96) 02/02/2022   00:02:06  (  70.33, 178.73)   50.97                70
 02/04/2022   13:49:06   ( -70.89, 152.56) 02/04/2022   13:50:03  ( -70.87, 152.50)    3.04                57
 02/04/2022   14:39:51   (  70.81, -40.00) 02/04/2022   14:39:29  (  70.82, -39.94)    2.52                22
 02/04/2022   15:30:19   ( -69.93, 128.73) 02/04/2022   15:29:12  ( -70.00, 126.49)   85.55                67
 02/07/2022   05:16:16   (  70.89, 100.79) 02/07/2022   05:17:00  (  70.87, 100.74)    2.63                44
 02/07/2022   06:06:59   ( -70.79, -91.72) 02/07/2022   06:06:29  ( -70.82, -91.71)    3.34                30
 02/09/2022   20:43:24   ( -70.92,  48.98) 02/09/2022   20:43:58  ( -70.92,  49.04)    2.49                34
 02/09/2022   21:34:08   (  70.79,-143.49) 02/09/2022   21:33:25  (  70.81,-143.48)    1.98                43
 02/12/2022   12:10:33   (  70.87,  -2.71) 02/12/2022   12:10:55  (  70.90,  -2.74)    2.90                22
 02/12/2022   13:01:16   ( -70.77, 164.77) 02/12/2022   13:00:25  ( -70.79, 164.73)    2.17                51