Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 1 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)
 01/05/2021   23:57:42   (  78.88, 152.67) 01/05/2021   23:56:35  (  78.87, 152.55)    2.91                67
 01/06/2021   00:48:26   ( -78.88, -40.07) 01/06/2021   00:47:31  ( -78.89, -40.00)    1.62                55
 01/06/2021   01:39:11   (  78.88, 127.30) 01/06/2021   01:38:35  (  78.88, 127.16)    3.14                36
 01/06/2021   02:29:55   ( -78.88, -65.44) 01/06/2021   02:29:31  ( -78.91, -65.39)    2.60                24
 01/06/2021   03:20:41   (  78.91, 101.69) 01/06/2021   03:20:35  (  78.90, 101.78)    2.49                 6
 01/06/2021   04:11:25   ( -78.92, -91.06) 01/06/2021   04:11:32  ( -78.89, -91.03)    3.74                 7
 01/06/2021   05:02:10   (  78.91,  76.32) 01/06/2021   05:02:35  (  78.91,  76.40)    1.65                25
 01/06/2021   05:52:54   ( -78.92,-116.43) 01/06/2021   05:53:32  ( -78.90,-116.42)    2.07                38
 01/06/2021   06:43:39   (  78.91,  50.95) 01/06/2021   06:44:35  (  78.93,  51.01)    2.25                56
 01/06/2021   07:34:23   ( -78.92,-141.80) 01/06/2021   07:35:32  ( -78.92,-141.80)    0.44                69