Simultaneous Nadir Overpasses (SNOs) between NOAA-15 and METOP-C
TLE Epoch: 2021 4 20.  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)    1.09                67
 04/20/2021   22:53:31   ( -81.00,  53.57) 04/20/2021   22:52:33  ( -81.00,  53.65)    1.39                58
 04/20/2021   23:44:02   (  81.00,-138.90) 04/20/2021   23:43:14  (  81.01,-138.81)    2.33                48
 04/21/2021   00:34:33   ( -81.00,  28.41) 04/21/2021   00:33:54  ( -81.01,  28.52)    2.30                39
 04/21/2021   01:25:05   (  81.01,-164.43) 04/21/2021   01:24:36  (  81.01,-164.30)    2.34                29
 04/21/2021   02:15:36   ( -81.01,   2.89) 04/21/2021   02:15:16  ( -81.01,   3.03)    2.46                20
 04/21/2021   03:06:07   (  81.01, 170.41) 04/21/2021   03:05:57  (  81.02, 170.57)    3.08                10
 04/21/2021   03:56:38   ( -81.01, -22.26) 04/21/2021   03:56:37  ( -81.01, -22.10)    2.99                 1
 04/21/2021   04:47:09   (  81.00, 145.25) 04/21/2021   04:47:19  (  81.01, 145.08)    3.03                10
 04/21/2021   05:37:40   ( -81.00, -47.42) 04/21/2021   05:37:59  ( -81.01, -47.59)    3.06                19
 04/21/2021   06:28:12   (  81.01, 119.72) 04/21/2021   06:28:41  (  81.00, 119.59)    2.61                29
 04/21/2021   07:18:43   ( -81.01, -72.94) 04/21/2021   07:19:21  ( -81.00, -73.08)    2.85                38
 04/21/2021   08:09:14   (  81.01,  94.56) 04/21/2021   08:10:02  (  81.01,  94.46)    1.73                48
 04/21/2021   08:59:45   ( -81.01, -98.09) 04/21/2021   09:00:42  ( -81.01, -98.21)    2.00                57
 04/21/2021   09:50:17   (  81.02,  69.03) 04/21/2021   09:51:24  (  81.00,  68.97)    2.08                67