Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 23.  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)
 12/23/2020   06:59:17   ( -78.90,-132.97) 12/23/2020   06:58:10  ( -78.91,-133.10)    2.83                67
 12/23/2020   07:50:02   (  78.90,  34.35) 12/23/2020   07:49:10  (  78.93,  34.32)    2.85                52
 12/23/2020   08:40:47   ( -78.94,-158.58) 12/23/2020   08:40:10  ( -78.92,-158.49)    2.92                37
 12/23/2020   09:31:32   (  78.94,   8.73) 12/23/2020   09:31:11  (  78.91,   8.68)    3.32                21
 12/23/2020   10:22:16   ( -78.94, 176.05) 12/23/2020   10:22:10  ( -78.94, 176.13)    1.83                 6
 12/23/2020   11:13:01   (  78.94, -16.64) 12/23/2020   11:13:11  (  78.93, -16.70)    1.90                10
 12/23/2020   12:03:45   ( -78.94, 150.68) 12/23/2020   12:04:10  ( -78.95, 150.75)    1.99                25
 12/23/2020   12:54:30   (  78.94, -42.01) 12/23/2020   12:55:11  (  78.94, -42.08)    1.53                41
 12/23/2020   13:45:14   ( -78.94, 125.31) 12/23/2020   13:46:10  ( -78.96, 125.36)    3.21                56
 12/23/2020   14:35:59   (  78.94, -67.37) 12/23/2020   14:37:11  (  78.96, -67.46)    2.67                72
 01/05/2021   23:57:42   (  78.87, 152.73) 01/05/2021   23:56:34  (  78.90, 152.80)    3.95                68
 01/06/2021   00:48:26   ( -78.87, -39.97) 01/06/2021   00:47:31  ( -78.90, -39.97)    2.82                55
 01/06/2021   01:39:12   (  78.90, 127.12) 01/06/2021   01:38:35  (  78.88, 127.16)    2.53                37
 01/06/2021   02:29:56   ( -78.91, -65.58) 01/06/2021   02:29:32  ( -78.88, -65.61)    3.29                24