Simultaneous Nadir Overpasses (SNOs) between METOP-B and NPP
TLE Epoch: 2017 12 17.  Predictions up to the next  14.0 days:

     Date     Time(METOP-B) METOP-B Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2017   21:02:25   ( -72.72,  36.24) 12/17/2017   21:02:39  ( -72.71,  36.24)    1.03                14
 12/17/2017   21:53:05   (  72.70,-156.47) 12/17/2017   21:53:25  (  72.72,-156.47)    2.43                20
 12/17/2017   22:43:47   ( -72.70,  10.85) 12/17/2017   22:44:09  ( -72.72,  10.85)    1.98                22
 12/17/2017   23:34:27   (  72.68, 178.14) 12/17/2017   23:34:54  (  72.68, 178.24)    3.38                27
 12/18/2017   00:25:09   ( -72.68, -14.53) 12/18/2017   00:25:38  ( -72.67, -14.43)    3.22                29
 12/18/2017   01:15:48   (  72.71, 152.87) 12/18/2017   01:16:24  (  72.68, 152.86)    2.81                36
 12/18/2017   02:06:30   ( -72.71, -39.81) 12/18/2017   02:07:08  ( -72.68, -39.82)    3.30                38
 12/18/2017   02:57:10   (  72.69, 127.48) 12/18/2017   02:57:54  (  72.69, 127.47)    0.54                44
 12/18/2017   03:47:52   ( -72.69, -65.19) 12/18/2017   03:48:38  ( -72.69, -65.21)    0.74                46
 12/18/2017   04:38:32   (  72.67, 102.10) 12/18/2017   04:39:24  (  72.70, 102.08)    3.37                52
 12/18/2017   05:29:14   ( -72.67, -90.57) 12/18/2017   05:30:08  ( -72.69, -90.60)    2.90                54
 12/18/2017   06:19:54   (  72.65,  76.72) 12/18/2017   06:20:53  (  72.65,  76.80)    2.69                59
 12/18/2017   07:10:36   ( -72.65,-115.95) 12/18/2017   07:11:37  ( -72.65,-115.88)    2.35                61
 12/18/2017   08:01:15   (  72.68,  51.44) 12/18/2017   08:02:23  (  72.66,  51.41)    2.19                68
 12/18/2017   08:51:57   ( -72.68,-141.23) 12/18/2017   08:53:07  ( -72.66,-141.27)    2.81                70
 12/18/2017   09:42:39   (  72.55,  25.85) 12/18/2017   09:43:52  (  72.62,  26.12)   11.37                73
 12/18/2017   10:33:21   ( -72.51,-166.92) 12/18/2017   10:34:34  ( -72.56,-166.45)   16.86                73
 12/18/2017   11:24:05   (  72.28,  -0.04) 12/18/2017   11:25:15  (  72.32,   1.35)   47.10                70
 12/18/2017   12:14:48   ( -72.23, 167.20) 12/18/2017   12:15:58  ( -72.26, 168.77)   53.43                70
 12/18/2017   13:05:33   (  71.95, -26.01) 12/18/2017   13:06:39  (  72.02, -23.44)   88.49                66
 12/18/2017   13:56:16   ( -71.90, 141.23) 12/18/2017   13:57:22  ( -71.96, 143.97)   94.63                66