Simultaneous Nadir Overpasses (SNOs) between FY3D and NPP
TLE Epoch: 2022 3 17.  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)
 03/17/2022   04:31:29   ( -81.22,-127.61) 03/17/2022   04:30:29  ( -81.22,-127.67)    1.05                60
 03/17/2022   05:22:15   (  81.22,  39.84) 03/17/2022   05:21:14  (  81.22,  39.67)    2.96                61
 03/17/2022   06:13:01   ( -81.22,-153.20) 03/17/2022   06:11:59  ( -81.22,-153.08)    2.04                62
 03/17/2022   07:03:47   (  81.22,  14.24) 03/17/2022   07:02:44  (  81.22,  14.25)    0.16                63
 03/17/2022   07:54:32   ( -81.22,-178.41) 03/17/2022   07:53:29  ( -81.22,-178.49)    1.48                63
 03/17/2022   08:45:19   (  81.22, -11.35) 03/17/2022   08:44:14  (  81.22, -11.16)    3.26                65
 03/17/2022   09:36:04   ( -81.22, 156.00) 03/17/2022   09:34:59  ( -81.22, 156.09)    1.63                65
 03/17/2022   10:26:49   (  81.22, -36.56) 03/17/2022   10:25:43  (  81.22, -36.58)    0.32                66
 03/17/2022   11:17:34   ( -81.22, 130.79) 03/17/2022   11:16:28  ( -81.23, 130.68)    1.91                66
 03/17/2022   12:08:20   (  81.22, -61.77) 03/17/2022   12:07:12  (  81.22, -61.60)    2.84                68
 03/17/2022   12:59:05   ( -81.22, 105.58) 03/17/2022   12:57:57  ( -81.22, 105.65)    1.19                68
 03/17/2022   13:49:51   (  81.22, -86.98) 03/17/2022   13:48:42  (  81.22, -87.02)    0.73                69
 03/17/2022   14:40:36   ( -81.22,  80.38) 03/17/2022   14:39:27  ( -81.22,  80.24)    2.34                69
 03/17/2022   15:31:23   (  81.22,-112.57) 03/17/2022   15:30:12  (  81.22,-112.43)    2.42                71
 03/17/2022   16:22:08   ( -81.22,  54.78) 03/17/2022   16:20:57  ( -81.22,  54.82)    0.76                71
 03/17/2022   17:12:54   (  81.22,-137.78) 03/17/2022   17:11:42  (  81.22,-137.84)    1.10                72
 03/17/2022   18:03:39   ( -81.22,  29.57) 03/17/2022   18:02:27  ( -81.22,  29.41)    2.75                72
 03/17/2022   18:54:26   (  81.22,-163.38) 03/17/2022   18:53:12  (  81.22,-163.26)    2.01                74
 03/17/2022   19:45:11   ( -81.22,   3.98) 03/17/2022   19:43:57  ( -81.22,   4.00)    0.34                74
 03/17/2022   20:35:57   (  81.22, 171.42) 03/17/2022   20:34:42  (  81.22, 171.33)    1.50                75