Simultaneous Nadir Overpasses (SNOs) between NOAA-15 and METOP-C
TLE Epoch: 2021 4 16.  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)
 04/20/2021   22:03:00   (  81.00,-113.74) 04/20/2021   22:01:53  (  81.00,-113.68)    1.08                67
 04/20/2021   22:53:31   ( -81.00,  53.60) 04/20/2021   22:52:33  ( -81.00,  53.68)    1.39                58
 04/20/2021   23:44:02   (  81.00,-138.90) 04/20/2021   23:43:14  (  81.01,-138.81)    2.34                48
 04/21/2021   00:34:33   ( -81.00,  28.45) 04/21/2021   00:33:54  ( -81.01,  28.56)    2.53                39
 04/21/2021   01:25:05   (  81.01,-164.43) 04/21/2021   01:24:36  (  81.01,-164.30)    2.32                29
 04/21/2021   02:15:36   ( -81.01,   2.93) 04/21/2021   02:15:16  ( -81.01,   3.06)    2.40                20
 04/21/2021   03:06:07   (  81.00, 170.41) 04/21/2021   03:05:57  (  81.01, 170.58)    3.07                10
 04/21/2021   03:56:38   ( -81.00, -22.23) 04/21/2021   03:56:37  ( -81.02, -22.06)    3.12                 1
 04/21/2021   04:47:09   (  81.00, 145.25) 04/21/2021   04:47:19  (  81.01, 145.08)    3.05                10
 04/21/2021   05:37:40   ( -81.00, -47.38) 04/21/2021   05:37:59  ( -81.01, -47.55)    3.15                19
 04/21/2021   06:28:12   (  81.01, 119.72) 04/21/2021   06:28:41  (  81.00, 119.59)    2.62                29
 04/21/2021   07:18:43   ( -81.01, -72.90) 04/21/2021   07:19:21  ( -81.00, -73.04)    2.70                38
 04/21/2021   08:09:14   (  81.01,  94.56) 04/21/2021   08:10:02  (  81.01,  94.46)    1.76                48
 04/21/2021   08:59:45   ( -81.01, -98.06) 04/21/2021   09:00:42  ( -81.01, -98.17)    2.07                57
 04/21/2021   09:50:17   (  81.02,  69.04) 04/21/2021   09:51:24  (  81.00,  68.97)    2.07                67