Simultaneous Nadir Overpasses (SNOs) between NOAA-15 and METOP-C
TLE Epoch: 2021 5 9.  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,  44.98) 05/12/2021   23:38:06  ( -80.86,  39.33)   99.74                61
 05/13/2021   00:29:42   (  81.00,-150.27) 05/13/2021   00:28:38  (  81.02,-150.10)    3.34                64
 05/13/2021   01:20:17   ( -81.01,  16.93) 05/13/2021   01:19:19  ( -81.01,  17.08)    2.57                58
 05/13/2021   02:10:44   (  81.00,-175.44) 05/13/2021   02:10:00  (  81.01,-175.60)    3.09                44
 05/13/2021   03:01:19   ( -81.01,  -8.24) 05/13/2021   03:00:41  ( -81.00,  -8.42)    3.18                38
 05/13/2021   03:51:47   (  81.01, 159.03) 05/13/2021   03:51:22  (  81.00, 158.91)    2.30                25
 05/13/2021   04:42:21   ( -81.00, -33.40) 05/13/2021   04:42:02  ( -81.01, -33.55)    2.85                19
 05/13/2021   05:32:49   (  81.01, 133.86) 05/13/2021   05:32:43  (  81.01, 133.78)    1.62                 6
 05/13/2021   06:23:24   ( -81.01, -58.93) 05/13/2021   06:23:24  ( -81.01, -59.04)    2.09                 0
 05/13/2021   07:13:52   (  81.02, 108.33) 05/13/2021   07:14:05  (  81.01, 108.28)    1.69                13
 05/13/2021   08:04:26   ( -81.01, -84.10) 05/13/2021   08:04:45  ( -81.02, -84.17)    1.47                19
 05/13/2021   08:54:54   (  81.02,  83.16) 05/13/2021   08:55:26  (  81.02,  83.15)    0.18                32
 05/13/2021   09:45:29   ( -81.02,-109.63) 05/13/2021   09:46:07  ( -81.01,-109.66)    1.56                38
 05/13/2021   10:35:56   (  81.01,  57.99) 05/13/2021   10:36:47  (  81.03,  58.02)    1.54                51
 05/13/2021   11:26:31   ( -81.02,-134.79) 05/13/2021   11:27:28  ( -81.02,-134.79)    0.09                57
 05/13/2021   12:16:59   (  81.02,  32.46) 05/13/2021   12:18:09  (  81.02,  32.53)    1.31                70