Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2020 12 27.  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   23:57:41   (  78.87, 152.74) 01/05/2021   23:56:34  (  78.88, 152.62)    2.74                67
 01/06/2021   00:48:25   ( -78.87, -39.98) 01/06/2021   00:47:30  ( -78.90, -39.91)    3.77                55
 01/06/2021   01:39:11   (  78.90, 127.12) 01/06/2021   01:38:34  (  78.89, 127.24)    2.76                37
 01/06/2021   02:29:55   ( -78.91, -65.60) 01/06/2021   02:29:31  ( -78.88, -65.55)    2.82                24
 01/06/2021   03:20:40   (  78.90, 101.75) 01/06/2021   03:20:34  (  78.91, 101.85)    2.21                 6
 01/06/2021   04:11:24   ( -78.91, -90.97) 01/06/2021   04:11:31  ( -78.90, -90.94)    1.20                 7
 01/06/2021   05:02:09   (  78.90,  76.38) 01/06/2021   05:02:34  (  78.92,  76.47)    2.82                25
 01/06/2021   05:52:53   ( -78.91,-116.34) 01/06/2021   05:53:31  ( -78.91,-116.32)    0.71                38
 01/06/2021   06:43:38   (  78.90,  51.01) 01/06/2021   06:44:35  (  78.90,  50.83)    3.83                57
 01/06/2021   07:34:22   ( -78.91,-141.71) 01/06/2021   07:35:31  ( -78.93,-141.71)    2.26                69