Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 1 20.  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)
 01/21/2021   02:42:23   ( -69.40, -41.21) 01/21/2021   02:43:34  ( -69.37, -41.09)    5.43                71
 01/21/2021   03:33:06   (  69.22, 126.35) 01/21/2021   03:33:02  (  69.21, 126.34)    0.99                 4
 01/21/2021   04:23:45   ( -69.03, -66.06) 01/21/2021   04:22:33  ( -69.04, -66.24)    7.67                72
 01/23/2021   18:58:47   ( -69.62,  74.40) 01/23/2021   18:59:58  ( -69.52,  74.98)   25.06                71
 01/23/2021   19:49:26   (  69.23,-117.73) 01/23/2021   19:49:28  (  69.25,-117.73)    1.75                 2
 01/23/2021   20:40:07   ( -69.14,  49.72) 01/23/2021   20:38:58  ( -69.14,  49.76)    1.71                69
 01/26/2021   11:15:12   ( -69.84,-170.00) 01/26/2021   11:16:22  ( -69.72,-168.87)   45.35                70
 01/26/2021   12:05:47   (  69.24,  -1.82) 01/26/2021   12:05:56  (  69.22,  -1.89)    3.65                 9
 01/26/2021   12:56:28   ( -69.15, 165.63) 01/26/2021   12:55:25  ( -69.17, 165.68)    2.76                63
 01/29/2021   03:31:37   ( -70.06, -54.40) 01/29/2021   03:32:45  ( -69.97, -52.65)   67.63                68
 01/29/2021   04:22:08   (  69.26, 114.09) 01/29/2021   04:22:23  (  69.25, 114.03)    2.80                15
 01/29/2021   05:12:49   ( -69.16, -78.45) 01/29/2021   05:11:53  ( -69.14, -78.48)    2.29                56
 01/31/2021   19:48:02   ( -70.28,  61.18) 01/31/2021   19:49:09  ( -70.15,  63.50)   88.52                67
 01/31/2021   20:38:29   (  69.27,-130.00) 01/31/2021   20:38:50  (  69.27,-130.07)    2.53                21
 01/31/2021   21:29:10   ( -69.17,  37.46) 01/31/2021   21:28:20  ( -69.17,  37.44)    1.21                50