Simultaneous Nadir Overpasses (SNOs) between NOAA-15 and METOP-C
TLE Epoch: 2021 12 7.  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   16:00:29   ( -80.96, 159.41) 12/18/2021   15:59:21  ( -80.96, 156.42)   52.25                68
 12/18/2021   16:51:05   (  81.03, -34.61) 12/18/2021   16:49:58  (  81.03, -34.61)    0.90                67
 12/18/2021   17:41:35   ( -81.03, 132.72) 12/18/2021   17:40:38  ( -81.03, 132.76)    1.06                57
 12/18/2021   18:32:08   (  81.04, -60.22) 12/18/2021   18:31:20  (  81.03, -60.10)    2.57                48
 12/18/2021   19:22:38   ( -81.04, 107.12) 12/18/2021   19:22:00  ( -81.03, 107.27)    3.02                38
 12/18/2021   20:13:09   (  81.02, -85.09) 12/18/2021   20:12:41  (  81.04, -85.22)    2.66                28
 12/18/2021   21:03:39   ( -81.03,  82.25) 12/18/2021   21:03:21  ( -81.04,  82.14)    2.26                18
 12/18/2021   21:54:12   (  81.04,-110.70) 12/18/2021   21:54:03  (  81.03,-110.71)    1.09                 9
 12/18/2021   22:44:42   ( -81.04,  56.65) 12/18/2021   22:44:43  ( -81.03,  56.65)    1.05                 1
 12/18/2021   23:35:14   (  81.04,-135.94) 12/18/2021   23:35:24  (  81.04,-135.84)    1.82                10
 12/19/2021   00:25:44   ( -81.04,  31.41) 12/19/2021   00:26:04  ( -81.04,  31.53)    2.03                20
 12/19/2021   01:16:16   (  81.04,-161.18) 12/19/2021   01:16:46  (  81.03,-161.33)    2.62                30
 12/19/2021   02:06:46   ( -81.04,   6.17) 12/19/2021   02:07:26  ( -81.03,   6.04)    2.47                40
 12/19/2021   02:57:18   (  81.04, 173.58) 12/19/2021   02:58:07  (  81.04, 173.55)    0.67                49
 12/19/2021   03:47:48   ( -81.04, -19.06) 12/19/2021   03:48:47  ( -81.04, -19.09)    0.71                59
 12/19/2021   04:38:20   (  81.04, 148.34) 12/19/2021   04:39:28  (  81.05, 148.43)    2.17                68