Simultaneous Nadir Overpasses (SNOs) between FY3D and NPP
TLE Epoch: 2023 9 18.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/18/2023   03:28:41   (  81.18,  70.53) 09/18/2023   03:27:44  (  81.18,  70.39)    2.53                57
 09/18/2023   04:19:27   ( -81.18,-122.08) 09/18/2023   04:18:28  ( -81.17,-121.92)    2.85                59
 09/18/2023   05:10:12   (  81.18,  45.29) 09/18/2023   05:09:13  (  81.17,  45.33)    0.71                59
 09/18/2023   06:00:58   ( -81.18,-147.32) 09/18/2023   05:59:58  ( -81.17,-147.36)    0.77                60
 09/18/2023   06:51:43   (  81.18,  20.05) 09/18/2023   06:50:43  (  81.18,  19.89)    2.86                60
 09/18/2023   07:42:30   ( -81.18,-172.94) 09/18/2023   07:41:28  ( -81.18,-172.80)    2.49                62
 09/18/2023   08:33:15   (  81.18,  -5.57) 09/18/2023   08:32:13  (  81.18,  -5.55)    0.32                62
 09/18/2023   09:24:01   ( -81.18, 161.82) 09/18/2023   09:22:58  ( -81.18, 161.76)    0.96                63
 09/18/2023   10:14:46   (  81.18, -30.81) 09/18/2023   10:13:43  (  81.18, -30.99)    3.15                63
 09/18/2023   11:05:33   ( -81.18, 136.20) 09/18/2023   11:04:28  ( -81.18, 136.32)    2.20                65
 09/18/2023   11:56:18   (  81.18, -56.44) 09/18/2023   11:55:13  (  81.18, -56.44)    0.51                65
 09/18/2023   12:47:04   ( -81.18, 110.96) 09/18/2023   12:45:58  ( -81.18, 110.88)    1.35                66
 09/18/2023   13:37:49   (  81.18, -81.68) 09/18/2023   13:36:42  (  81.17, -81.50)    3.12                67
 09/18/2023   14:28:35   ( -81.18,  85.72) 09/18/2023   14:27:27  ( -81.17,  85.82)    1.85                68
 09/18/2023   15:19:20   (  81.18,-106.91) 09/18/2023   15:18:12  (  81.17,-106.94)    0.49                68
 09/18/2023   16:10:06   ( -81.18,  60.48) 09/18/2023   16:08:57  ( -81.17,  60.38)    1.72                69
 09/18/2023   17:00:52   (  81.18,-132.54) 09/18/2023   16:59:42  (  81.18,-132.38)    2.79                70
 09/18/2023   17:51:38   ( -81.18,  34.86) 09/18/2023   17:50:27  ( -81.18,  34.94)    1.46                71
 09/18/2023   18:42:23   (  81.18,-157.78) 09/18/2023   18:41:12  (  81.18,-157.82)    0.68                71
 09/18/2023   19:33:09   ( -81.18,   9.62) 09/18/2023   19:31:57  ( -81.18,   9.50)    1.99                72
 09/18/2023   20:23:55   (  81.18, 176.59) 09/18/2023   20:22:42  (  81.18, 176.74)    2.52                73
 09/18/2023   21:14:41   ( -81.18, -16.01) 09/18/2023   21:13:27  ( -81.18, -15.94)    1.20                74
 09/18/2023   22:05:26   (  81.18, 151.35) 09/18/2023   22:04:12  (  81.18, 151.30)    1.11                74
 09/18/2023   22:56:12   ( -81.18, -41.24) 09/18/2023   22:54:57  ( -81.18, -41.38)    2.35                75