Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 5 14.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 05/23/2021   04:13:02   ( -78.53, -88.27) 05/23/2021   04:11:51  ( -78.53, -88.24)    0.80                71
 05/23/2021   05:03:48   (  78.56,  78.89) 05/23/2021   05:02:56  (  78.52,  78.92)    3.54                52
 05/23/2021   05:54:31   ( -78.53,-113.65) 05/23/2021   05:53:51  ( -78.55,-113.65)    1.72                40
 05/23/2021   06:45:17   (  78.56,  53.50) 05/23/2021   06:44:56  (  78.54,  53.51)    2.30                21
 05/23/2021   07:36:00   ( -78.53,-139.03) 05/23/2021   07:35:51  ( -78.56,-139.07)    2.98                 9
 05/23/2021   08:26:46   (  78.56,  28.12) 05/23/2021   08:26:56  (  78.55,  28.09)    1.28                10
 05/23/2021   09:17:30   ( -78.57,-164.65) 05/23/2021   09:17:51  ( -78.57,-164.48)    3.61                21
 05/23/2021   10:08:15   (  78.56,   2.74) 05/23/2021   10:08:56  (  78.56,   2.68)    1.24                41
 05/23/2021   10:58:58   ( -78.58, 169.97) 05/23/2021   10:59:50  ( -78.58, 170.10)    3.08                52
 05/23/2021   11:49:43   (  78.56, -22.64) 05/23/2021   11:50:55  (  78.57, -22.73)    2.23                72