Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 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)
 01/05/2021   23:57:42   (  78.89, 152.58) 01/05/2021   23:56:34  (  78.89, 152.71)    2.98                68
 01/06/2021   00:48:26   ( -78.90, -40.17) 01/06/2021   00:47:31  ( -78.88, -40.08)    2.70                55
 01/06/2021   01:39:11   (  78.89, 127.21) 01/06/2021   01:38:34  (  78.90, 127.33)    3.13                37
 01/06/2021   02:29:55   ( -78.90, -65.54) 01/06/2021   02:29:31  ( -78.90, -65.47)    1.49                24
 01/06/2021   03:20:40   (  78.89, 101.84) 01/06/2021   03:20:35  (  78.89, 101.69)    3.07                 5
 01/06/2021   04:11:24   ( -78.90, -90.91) 01/06/2021   04:11:31  ( -78.91, -90.86)    1.65                 7
 01/06/2021   05:02:10   (  78.93,  76.22) 01/06/2021   05:02:35  (  78.90,  76.31)    3.38                25
 01/06/2021   05:52:53   ( -78.90,-116.28) 01/06/2021   05:53:31  ( -78.92,-116.24)    2.96                38
 01/06/2021   06:43:39   (  78.93,  50.85) 01/06/2021   06:44:35  (  78.92,  50.93)    2.00                56
 01/06/2021   07:34:23   ( -78.94,-141.89) 01/06/2021   07:35:32  ( -78.91,-141.88)    3.19                69