Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 11 16.  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)
 11/18/2021   00:02:11   (  78.05, 158.42) 11/18/2021   00:00:57  (  78.07, 158.46)    3.03                74
 11/18/2021   00:52:56   ( -78.07, -34.39) 11/18/2021   00:52:01  ( -78.07, -34.34)    1.31                55
 11/18/2021   01:43:40   (  78.05, 133.03) 11/18/2021   01:42:57  (  78.08, 133.00)    3.21                43
 11/18/2021   02:34:25   ( -78.08, -59.79) 11/18/2021   02:34:01  ( -78.08, -59.79)    0.13                24
 11/18/2021   03:25:10   (  78.10, 107.42) 11/18/2021   03:24:57  (  78.09, 107.54)    2.99                13
 11/18/2021   04:15:54   ( -78.08, -85.18) 11/18/2021   04:16:01  ( -78.08, -85.25)    1.57                 7
 11/18/2021   05:06:39   (  78.10,  82.02) 11/18/2021   05:06:57  (  78.09,  82.08)    1.58                18
 11/18/2021   05:57:23   ( -78.09,-110.57) 11/18/2021   05:58:01  ( -78.09,-110.70)    3.01                38
 11/18/2021   06:48:08   (  78.11,  56.63) 11/18/2021   06:48:57  (  78.10,  56.62)    0.64                49
 11/18/2021   07:38:53   ( -78.13,-136.18) 11/18/2021   07:40:01  ( -78.10,-136.16)    3.51                68
 11/18/2021   08:29:44   (  78.39,  29.69) 11/18/2021   08:30:51  (  78.33,  32.53)   64.06                67