Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 4 17.  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)
 04/25/2021   17:25:49   (  78.62,-107.16) 04/25/2021   17:24:39  (  78.61,-107.01)    3.51                70
 04/25/2021   18:16:33   ( -78.61,  60.20) 04/25/2021   18:15:40  ( -78.61,  60.28)    1.77                53
 04/25/2021   19:07:18   (  78.62,-132.54) 04/25/2021   19:06:39  (  78.62,-132.41)    2.75                39
 04/25/2021   19:58:02   ( -78.61,  34.82) 04/25/2021   19:57:40  ( -78.63,  34.87)    2.03                22
 04/25/2021   20:48:47   (  78.62,-157.92) 04/25/2021   20:48:39  (  78.63,-157.82)    2.70                 8
 04/25/2021   21:39:31   ( -78.61,   9.45) 04/25/2021   21:39:40  ( -78.64,   9.47)    3.06                 9
 04/25/2021   22:30:16   (  78.62, 176.71) 04/25/2021   22:30:39  (  78.65, 176.78)    3.38                23
 04/25/2021   23:21:01   ( -78.65, -16.16) 04/25/2021   23:21:41  ( -78.62, -16.18)    3.69                40
 04/26/2021   00:11:46   (  78.66, 151.09) 04/26/2021   00:12:40  (  78.63, 151.13)    3.78                54
 04/26/2021   01:02:30   ( -78.65, -41.54) 04/26/2021   01:03:41  ( -78.63, -41.59)    2.57                71