Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 1.  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,-161.36) 06/05/2021   21:10:02  (  78.31,-163.68)   52.39                69
 06/05/2021   22:02:00   ( -78.50,   4.74) 06/05/2021   22:00:53  ( -78.49,   4.70)    2.16                67
 06/05/2021   22:52:45   (  78.49, 172.13) 06/05/2021   22:51:57  (  78.51, 172.07)    2.17                48
 06/05/2021   23:43:29   ( -78.50, -20.64) 06/05/2021   23:42:53  ( -78.50, -20.72)    1.90                36
 06/06/2021   00:34:15   (  78.53, 146.52) 06/06/2021   00:33:57  (  78.52, 146.65)    3.33                18
 06/06/2021   01:24:58   ( -78.51, -46.02) 06/06/2021   01:24:53  ( -78.51, -46.13)    2.53                 5
 06/06/2021   02:15:44   (  78.53, 121.13) 06/06/2021   02:15:57  (  78.53, 121.24)    2.27                13
 06/06/2021   03:06:28   ( -78.55, -71.63) 06/06/2021   03:06:53  ( -78.52, -71.55)    3.27                25
 06/06/2021   03:57:13   (  78.53,  95.75) 06/06/2021   03:57:57  (  78.54,  95.82)    1.69                44
 06/06/2021   04:47:57   ( -78.55, -97.01) 06/06/2021   04:48:53  ( -78.53, -96.97)    1.90                56
 06/06/2021   05:38:43   (  78.57,  70.14) 06/06/2021   05:39:57  (  78.55,  70.40)    6.24                74