Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 2 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)
 02/16/2021   03:43:33   (  78.79,  96.96) 02/16/2021   03:42:32  (  78.78,  97.06)    2.50                61
 02/16/2021   04:34:17   ( -78.79, -95.75) 02/16/2021   04:33:31  ( -78.79, -95.64)    2.59                46
 02/16/2021   05:25:02   (  78.79,  71.58) 02/16/2021   05:24:32  (  78.80,  71.67)    2.01                30
 02/16/2021   06:15:46   ( -78.79,-121.12) 02/16/2021   06:15:31  ( -78.80,-121.03)    2.31                15
 02/16/2021   07:06:31   (  78.79,  46.21) 02/16/2021   07:06:32  (  78.81,  46.28)    2.61                 1
 02/16/2021   07:57:15   ( -78.79,-146.50) 02/16/2021   07:57:31  ( -78.82,-146.42)    3.06                16
 02/16/2021   08:48:00   (  78.79,  20.84) 02/16/2021   08:48:32  (  78.82,  20.88)    3.82                32
 02/16/2021   09:38:45   ( -78.83,-172.11) 02/16/2021   09:39:32  ( -78.80,-172.05)    3.88                47
 02/16/2021   10:29:30   (  78.83,  -4.78) 02/16/2021   10:30:33  (  78.81,  -4.76)    2.66                63
 02/16/2021   11:20:17   ( -78.98, 161.54) 02/16/2021   11:21:27  ( -78.94, 163.57)   43.33                70
 03/01/2021   19:50:59   (  78.41,-142.50) 03/01/2021   19:49:56  (  78.41,-146.76)   95.35                63
 03/01/2021   20:41:52   ( -78.73,  22.85) 03/01/2021   20:40:49  ( -78.76,  22.90)    4.02                63
 03/01/2021   21:32:37   (  78.75,-169.96) 03/01/2021   21:31:47  (  78.74,-169.98)    0.54                50
 03/01/2021   22:23:22   ( -78.76,  -2.76) 03/01/2021   22:22:50  ( -78.74,  -2.74)    2.41                32
 03/01/2021   23:14:06   (  78.75, 164.67) 03/01/2021   23:13:47  (  78.76, 164.63)    1.45                19
 03/02/2021   00:04:51   ( -78.77, -28.13) 03/02/2021   00:04:50  ( -78.76, -28.14)    0.80                 1
 03/02/2021   00:55:35   (  78.75, 139.29) 03/02/2021   00:55:47  (  78.77, 139.23)    2.97                12
 03/02/2021   01:46:20   ( -78.77, -53.51) 03/02/2021   01:46:50  ( -78.77, -53.53)    0.87                30