Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NPP
TLE Epoch: 2022 12 6.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/06/2022   22:10:40   ( -66.29,  28.40) 12/06/2022   22:10:44  ( -66.28,  28.43)    1.63                 4
 12/06/2022   23:01:45   (  67.29,-165.41) 12/06/2022   23:01:49  (  67.28,-165.39)    1.68                 4
 12/06/2022   23:52:04   ( -66.50,   2.84) 12/06/2022   23:52:18  ( -66.50,   2.82)    1.05                14
 12/07/2022   00:42:30   (  65.36, 171.34) 12/07/2022   00:42:44  (  65.37, 171.33)    0.96                14
 12/07/2022   01:29:13   ( -52.39, -12.35) 12/07/2022   01:29:36  ( -52.39, -12.35)    0.05                23
 12/07/2022   02:18:47   (  48.17, 156.86) 12/07/2022   02:19:10  (  48.16, 156.88)    2.31                23
 12/07/2022   03:08:26   ( -45.07, -34.53) 12/07/2022   03:08:58  ( -45.05, -34.55)    2.84                32
 12/07/2022   03:59:14   (  45.10, 132.76) 12/07/2022   03:59:47  (  45.10, 132.73)    2.07                33
 12/07/2022   05:14:08   ( -47.55, 132.40) 12/07/2022   05:14:52  ( -47.53, 132.43)    3.17                44
 12/07/2022   06:04:46   (  47.67, -60.21) 12/07/2022   06:05:32  (  47.65, -60.20)    2.69                46
 12/07/2022   06:55:19   ( -48.08, 107.29) 12/07/2022   06:56:12  ( -48.10, 107.29)    2.37                53
 12/07/2022   07:44:20   (  53.79, -82.72) 12/07/2022   07:45:15  (  53.79, -82.72)    0.04                55
 12/07/2022   08:32:09   ( -63.37,  91.00) 12/07/2022   08:33:12  ( -63.38,  91.00)    0.67                63
 12/07/2022   09:22:18   (  65.21, -99.97) 12/07/2022   09:23:22  (  65.21, -99.96)    0.30                64
 12/07/2022   10:11:42   ( -69.21,  72.07) 12/07/2022   10:12:55  ( -69.20,  72.05)    1.50                73