Simultaneous Nadir Overpasses (SNOs) between NOAA-15 and METOP-C
TLE Epoch: 2021 12 18.  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)
 12/18/2021   16:00:34   ( -81.04, 157.73) 12/18/2021   15:59:19  ( -81.02, 157.79)    1.99                75
 12/18/2021   16:51:06   (  81.03, -34.76) 12/18/2021   16:50:00  (  81.03, -34.62)    2.36                66
 12/18/2021   17:41:36   ( -81.04, 132.50) 12/18/2021   17:40:40  ( -81.03, 132.68)    3.17                56
 12/18/2021   18:32:08   (  81.03, -60.00) 12/18/2021   18:31:22  (  81.03, -60.10)    1.85                46
 12/18/2021   19:22:38   ( -81.04, 107.26) 12/18/2021   19:22:02  ( -81.03, 107.20)    1.59                36
 12/18/2021   20:13:10   (  81.03, -85.24) 12/18/2021   20:12:43  (  81.04, -85.21)    0.87                27
 12/18/2021   21:03:40   ( -81.04,  82.02) 12/18/2021   21:03:23  ( -81.04,  82.08)    1.00                17
 12/18/2021   21:54:13   (  81.05,-110.85) 12/18/2021   21:54:05  (  81.03,-110.69)    3.12                 8
 12/18/2021   22:44:42   ( -81.04,  56.79) 12/18/2021   22:44:45  ( -81.03,  56.60)    3.28                 3
 12/18/2021   23:35:14   (  81.03,-135.72) 12/18/2021   23:35:26  (  81.04,-135.80)    1.98                12
 12/19/2021   00:25:44   ( -81.03,  31.55) 12/19/2021   00:26:06  ( -81.04,  31.49)    1.28                22
 12/19/2021   01:16:17   (  81.05,-161.33) 12/19/2021   01:16:48  (  81.04,-161.29)    1.29                31
 12/19/2021   02:06:47   ( -81.05,   5.95) 12/19/2021   02:07:28  ( -81.03,   6.01)    1.94                41
 12/19/2021   02:57:19   (  81.04, 173.43) 12/19/2021   02:58:09  (  81.05, 173.60)    3.01                50
 12/19/2021   03:47:49   ( -81.05, -19.28) 12/19/2021   03:48:49  ( -81.04, -19.10)    3.19                60