Simultaneous Nadir Overpasses (SNOs) between METOP-B and NPP
TLE Epoch: 2021 3 18.  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)
 03/18/2021   04:00:10   (  72.67, 111.68) 03/18/2021   04:00:30  (  72.70, 111.66)    3.29                20
 03/18/2021   04:50:52   ( -72.66, -81.01) 03/18/2021   04:51:13  ( -72.67, -80.95)    1.79                21
 03/18/2021   05:41:32   (  72.65,  86.29) 03/18/2021   05:41:59  (  72.66,  86.38)    2.89                27
 03/18/2021   06:32:13   ( -72.69,-106.29) 03/18/2021   06:32:43  ( -72.67,-106.34)    2.86                30
 03/18/2021   07:22:53   (  72.68,  61.01) 03/18/2021   07:23:29  (  72.66,  60.99)    1.79                36
 03/18/2021   08:13:35   ( -72.67,-131.68) 03/18/2021   08:14:13  ( -72.68,-131.73)    1.89                38
 03/18/2021   09:04:15   (  72.65,  35.62) 03/18/2021   09:04:59  (  72.67,  35.60)    1.71                44
 03/18/2021   09:54:57   ( -72.65,-157.06) 03/18/2021   09:55:42  ( -72.63,-157.01)    2.34                45
 03/18/2021   10:45:37   (  72.63,  10.24) 03/18/2021   10:46:28  (  72.62,  10.32)    2.88                51
 03/18/2021   11:36:19   ( -72.62, 177.55) 03/18/2021   11:37:12  ( -72.64, 177.60)    2.40                53
 03/18/2021   12:26:58   (  72.66, -15.05) 03/18/2021   12:27:58  (  72.63, -15.07)    3.40                60
 03/18/2021   13:17:40   ( -72.65, 152.27) 03/18/2021   13:18:42  ( -72.65, 152.22)    1.88                62
 03/18/2021   14:08:20   (  72.64, -40.43) 03/18/2021   14:09:28  (  72.63, -40.45)    0.74                68
 03/18/2021   14:59:01   ( -72.63, 126.88) 03/18/2021   15:00:11  ( -72.65, 126.83)    2.97                70
 03/18/2021   15:49:43   (  72.51, -66.02) 03/18/2021   15:50:56  (  72.59, -65.74)   13.02                73
 03/18/2021   16:40:25   ( -72.51, 101.29) 03/18/2021   16:41:38  ( -72.51, 101.75)   15.44                73
 03/18/2021   17:31:10   (  72.23, -91.91) 03/18/2021   17:32:20  (  72.29, -90.51)   47.93                70
 03/18/2021   18:21:53   ( -72.18,  75.30) 03/18/2021   18:23:03  ( -72.26,  76.87)   53.95                70
 03/18/2021   19:12:37   (  71.95,-117.79) 03/18/2021   19:13:44  (  71.99,-115.31)   85.52                67
 03/18/2021   20:03:20   ( -71.90,  49.44) 03/18/2021   20:04:26  ( -71.91,  52.17)   94.43                66