Simultaneous Nadir Overpasses (SNOs) between NOAA-15 and METOP-C
TLE Epoch: 2021 5 5.  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,  44.92) 05/12/2021   23:38:06  ( -80.86,  39.26)   99.92                61
 05/13/2021   00:29:42   (  81.01,-150.36) 05/13/2021   00:28:38  (  81.01,-150.20)    2.84                64
 05/13/2021   01:20:17   ( -81.01,  16.86) 05/13/2021   01:19:19  ( -81.01,  17.00)    2.47                58
 05/13/2021   02:10:44   (  81.00,-175.53) 05/13/2021   02:10:00  (  81.01,-175.70)    3.00                44
 05/13/2021   03:01:19   ( -81.01,  -8.30) 05/13/2021   03:00:40  ( -81.02,  -8.13)    3.14                39
 05/13/2021   03:51:47   (  81.02, 158.94) 05/13/2021   03:51:22  (  81.00, 158.80)    2.91                25
 05/13/2021   04:42:21   ( -81.01, -33.46) 05/13/2021   04:42:02  ( -81.01, -33.62)    2.80                19
 05/13/2021   05:32:49   (  81.01, 133.77) 05/13/2021   05:32:43  (  81.01, 133.68)    1.70                 6
 05/13/2021   06:23:24   ( -81.02, -58.99) 05/13/2021   06:23:24  ( -81.00, -59.12)    2.57                 0
 05/13/2021   07:13:51   (  81.01, 108.61) 05/13/2021   07:14:04  (  81.02, 108.55)    1.57                13
 05/13/2021   08:04:26   ( -81.01, -84.16) 05/13/2021   08:04:45  ( -81.01, -84.24)    1.49                19
 05/13/2021   08:54:54   (  81.02,  83.07) 05/13/2021   08:55:26  (  81.01,  83.05)    0.98                32
 05/13/2021   09:45:28   ( -81.01,-109.32) 05/13/2021   09:46:06  ( -81.02,-109.37)    1.74                38
 05/13/2021   10:35:56   (  81.02,  57.90) 05/13/2021   10:36:47  (  81.02,  57.92)    0.62                51
 05/13/2021   11:26:31   ( -81.02,-134.85) 05/13/2021   11:27:28  ( -81.02,-134.87)    0.61                57
 05/13/2021   12:16:59   (  81.03,  32.37) 05/13/2021   12:18:09  (  81.01,  32.42)    1.81                70