Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 5 26.  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)
 06/05/2021   21:11:11   (  78.29,-161.33) 06/05/2021   21:10:03  (  78.29,-163.83)   56.51                68
 06/05/2021   22:02:00   ( -78.50,   4.79) 06/05/2021   22:00:53  ( -78.50,   4.81)    0.73                67
 06/05/2021   22:52:45   (  78.49, 172.16) 06/05/2021   22:51:57  (  78.52, 172.16)    3.66                48
 06/05/2021   23:43:29   ( -78.50, -20.59) 06/05/2021   23:42:53  ( -78.51, -20.61)    1.82                36
 06/06/2021   00:34:15   (  78.53, 146.55) 06/06/2021   00:33:58  (  78.50, 146.50)    3.59                17
 06/06/2021   01:24:58   ( -78.50, -45.97) 06/06/2021   01:24:53  ( -78.53, -46.02)    3.13                 5
 06/06/2021   02:15:44   (  78.53, 121.17) 06/06/2021   02:15:58  (  78.51, 121.08)    2.99                14
 06/06/2021   03:06:28   ( -78.54, -71.58) 06/06/2021   03:06:53  ( -78.54, -71.44)    3.15                25
 06/06/2021   03:57:13   (  78.53,  95.79) 06/06/2021   03:57:58  (  78.52,  95.67)    2.93                45
 06/06/2021   04:47:57   ( -78.54, -96.96) 06/06/2021   04:48:53  ( -78.55, -96.86)    2.58                56
 06/06/2021   05:38:43   (  78.57,  70.17) 06/06/2021   05:39:57  (  78.57,  70.49)    7.00                74