Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2022 2 13.  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)
 02/15/2022   02:47:07   (  71.43, 137.24) 02/15/2022   02:48:17  (  71.32, 138.52)   47.42                70
 02/15/2022   03:37:41   ( -70.89, -54.50) 02/15/2022   03:37:53  ( -70.88, -54.54)    1.99                12
 02/15/2022   04:28:26   (  70.79, 112.97) 02/15/2022   04:27:20  (  70.77, 112.95)    1.65                66
 02/17/2022   18:14:09   ( -71.13,  86.00) 02/17/2022   18:15:20  ( -71.08,  86.39)   14.78                71
 02/17/2022   19:04:51   (  70.87,-106.25) 02/17/2022   19:04:49  (  70.87,-106.30)    1.76                 2
 02/17/2022   19:55:32   ( -70.69,  61.37) 02/17/2022   19:54:19  ( -70.76,  61.16)   10.31                73
 02/20/2022   09:41:16   (  70.97,  34.51) 02/20/2022   09:42:18  (  70.96,  34.44)    3.07                62
 02/20/2022   10:31:59   ( -70.89,-158.04) 02/20/2022   10:31:47  ( -70.90,-158.02)    0.99                12
 02/20/2022   11:22:33   (  70.21,  10.37) 02/20/2022   11:21:24  (  70.24,   8.65)   64.74                69
 02/23/2022   01:08:23   ( -70.99, -17.28) 02/23/2022   01:09:15  ( -70.97, -17.30)    2.11                52
 02/23/2022   01:59:08   (  70.88, 150.20) 02/23/2022   01:58:42  (  70.86, 150.18)    2.74                26
 02/25/2022   16:35:33   (  70.99, -69.05) 02/25/2022   16:36:10  (  70.98, -69.04)    1.18                37
 02/25/2022   17:26:15   ( -70.86,  98.48) 02/25/2022   17:25:40  ( -70.87,  98.42)    2.08                35