Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 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)
 03/15/2021   12:49:19   ( -78.41, 142.95) 03/15/2021   12:48:14  ( -78.42, 139.23)   83.23                65
 03/15/2021   13:40:11   (  78.70, -51.48) 03/15/2021   13:39:01  (  78.70, -51.59)    2.59                70
 03/15/2021   14:30:56   ( -78.71, 115.73) 03/15/2021   14:30:06  ( -78.71, 115.75)    0.45                50
 03/15/2021   15:21:40   (  78.70, -76.85) 03/15/2021   15:21:01  (  78.71, -76.99)    3.32                39
 03/15/2021   16:12:25   ( -78.72,  90.36) 03/15/2021   16:12:06  ( -78.73,  90.35)    1.19                19
 03/15/2021   17:03:10   (  78.74,-102.47) 03/15/2021   17:03:01  (  78.72,-102.39)    2.16                 9
 03/15/2021   17:53:54   ( -78.72,  64.98) 03/15/2021   17:54:06  ( -78.74,  64.96)    2.74                12
 03/15/2021   18:44:39   (  78.74,-127.84) 03/15/2021   18:45:01  (  78.74,-127.79)    1.18                22
 03/15/2021   19:35:24   ( -78.75,  39.37) 03/15/2021   19:36:07  ( -78.72,  39.31)    3.89                43
 03/15/2021   20:26:08   (  78.74,-153.22) 03/15/2021   20:27:01  (  78.75,-153.18)    1.68                53
 03/15/2021   21:16:53   ( -78.75,  13.99) 03/15/2021   21:18:07  ( -78.73,  13.92)    2.75                74