Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 5 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)
 05/21/2019   01:23:07   (  68.89, 158.36) 05/21/2019   01:24:14  (  68.89, 158.35)    0.17                67
 05/21/2019   02:13:48   ( -68.79, -34.19) 05/21/2019   02:13:44  ( -68.77, -34.16)    2.39                 4
 05/21/2019   03:04:27   (  68.39, 133.64) 05/21/2019   03:03:15  (  68.45, 133.08)   23.32                72
 05/23/2019   17:39:34   (  68.87, -85.74) 05/23/2019   17:40:43  (  68.86, -85.80)    2.67                69
 05/23/2019   18:30:15   ( -68.77,  81.72) 05/23/2019   18:30:13  ( -68.75,  81.70)    2.28                 2
 05/23/2019   19:20:55   (  68.43,-110.53) 05/23/2019   19:19:43  (  68.47,-111.00)   19.78                72
 05/26/2019   09:56:02   (  68.91,  30.09) 05/26/2019   09:57:11  (  68.88,  30.11)    3.23                69
 05/26/2019   10:46:42   ( -68.75,-162.37) 05/26/2019   10:46:41  ( -68.78,-162.39)    2.97                 1
 05/26/2019   11:37:23   (  68.47,   5.30) 05/26/2019   11:36:10  (  68.55,   4.98)   15.91                73
 05/29/2019   02:12:28   (  68.90, 145.99) 05/29/2019   02:13:38  (  68.90, 146.01)    0.94                70
 05/29/2019   03:03:09   ( -68.79, -46.54) 05/29/2019   03:03:08  ( -68.80, -46.49)    2.44                 1
 05/29/2019   03:53:50   (  68.52, 121.13) 05/29/2019   03:52:37  (  68.57, 120.88)   11.80                73
 05/31/2019   18:28:55   (  68.89, -98.12) 05/31/2019   18:30:06  (  68.91, -98.10)    2.20                71
 05/31/2019   19:19:36   ( -68.77,  69.36) 05/31/2019   19:19:37  ( -68.75,  69.34)    2.17                 1
 05/31/2019   20:10:18   (  68.56,-123.05) 05/31/2019   20:09:05  (  68.58,-123.23)    7.70                73