Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 5 31.  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   (  78.30,-161.40) 06/05/2021   21:10:02  (  78.31,-163.73)   52.51                69
 06/05/2021   22:02:00   ( -78.51,   4.71) 06/05/2021   22:00:53  ( -78.48,   4.66)    3.45                67
 06/05/2021   22:52:45   (  78.50, 172.09) 06/05/2021   22:51:57  (  78.50, 172.03)    1.45                48
 06/05/2021   23:43:29   ( -78.51, -20.67) 06/05/2021   23:42:53  ( -78.49, -20.76)    2.84                36
 06/06/2021   00:34:14   (  78.50, 146.71) 06/06/2021   00:33:57  (  78.51, 146.61)    2.61                17
 06/06/2021   01:24:58   ( -78.51, -46.05) 06/06/2021   01:24:53  ( -78.50, -46.17)    2.83                 5
 06/06/2021   02:15:44   (  78.54, 121.10) 06/06/2021   02:15:57  (  78.52, 121.19)    2.72                13
 06/06/2021   03:06:27   ( -78.51, -71.44) 06/06/2021   03:06:53  ( -78.52, -71.59)    3.43                26
 06/06/2021   03:57:13   (  78.54,  95.71) 06/06/2021   03:57:57  (  78.54,  95.77)    1.46                44
 06/06/2021   04:47:57   ( -78.55, -97.05) 06/06/2021   04:48:53  ( -78.53, -97.01)    3.04                56
 06/06/2021   05:38:43   (  78.58,  70.10) 06/06/2021   05:39:57  (  78.55,  70.36)    6.78                74