Simultaneous Nadir Overpasses (SNOs) between NOAA-15 and METOP-C
TLE Epoch: 2021 5 11.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-15) NOAA-15 Lat/Lon Date Time(METOP-C) METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 05/12/2021   23:39:07   ( -80.88,  44.87) 05/12/2021   23:38:06  ( -80.86,  39.22)   99.72                61
 05/13/2021   00:29:42   (  81.01,-150.37) 05/13/2021   00:28:38  (  81.01,-150.20)    3.05                64
 05/13/2021   01:20:17   ( -81.02,  16.81) 05/13/2021   01:19:19  ( -81.01,  16.96)    2.84                58
 05/13/2021   02:10:44   (  81.01,-175.54) 05/13/2021   02:10:00  (  81.01,-175.70)    2.77                44
 05/13/2021   03:01:19   ( -81.01,  -8.35) 05/13/2021   03:00:40  ( -81.02,  -8.17)    3.26                39
 05/13/2021   03:51:46   (  81.00, 159.30) 05/13/2021   03:51:21  (  81.02, 159.18)    2.76                25
 05/13/2021   04:42:21   ( -81.01, -33.52) 05/13/2021   04:42:02  ( -81.01, -33.66)    2.51                19
 05/13/2021   05:32:49   (  81.01, 133.76) 05/13/2021   05:32:43  (  81.01, 133.68)    1.48                 6
 05/13/2021   06:23:23   ( -81.00, -58.68) 05/13/2021   06:23:23  ( -81.02, -58.79)    2.48                 0
 05/13/2021   07:13:51   (  81.01, 108.60) 05/13/2021   07:14:04  (  81.02, 108.55)    1.39                13
 05/13/2021   08:04:26   ( -81.02, -84.21) 05/13/2021   08:04:45  ( -81.01, -84.29)    1.34                19
 05/13/2021   08:54:54   (  81.02,  83.06) 05/13/2021   08:55:26  (  81.01,  83.05)    0.98                32
 05/13/2021   09:45:28   ( -81.01,-109.38) 05/13/2021   09:46:06  ( -81.02,-109.41)    1.20                38
 05/13/2021   10:35:56   (  81.02,  57.89) 05/13/2021   10:36:47  (  81.02,  57.92)    0.72                51
 05/13/2021   11:26:31   ( -81.02,-134.91) 05/13/2021   11:27:28  ( -81.01,-134.91)    1.05                57
 05/13/2021   12:16:59   (  81.03,  32.36) 05/13/2021   12:18:09  (  81.01,  32.43)    2.00                70