Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NPP
TLE Epoch: 2022 12 5.  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)
 12/05/2022   19:12:19   ( -79.27,  39.86) 12/05/2022   19:11:15  ( -79.27,  39.80)    1.35                64
 12/05/2022   20:03:12   (  79.55,-155.05) 12/05/2022   20:02:09  (  79.55,-155.16)    2.18                63
 12/05/2022   20:52:51   ( -77.80,  23.41) 12/05/2022   20:52:06  ( -77.80,  23.41)    0.11                45
 12/05/2022   21:43:46   (  78.21,-171.40) 12/05/2022   21:43:02  (  78.21,-171.44)    0.79                44
 12/05/2022   22:33:00   ( -75.04,   8.39) 12/05/2022   22:32:34  ( -75.03,   8.43)    1.11                26
 12/05/2022   23:23:59   (  75.70, 173.72) 12/05/2022   23:23:34  (  75.69, 173.72)    0.23                25
 12/06/2022   00:12:35   ( -70.20,  -6.80) 12/06/2022   00:12:28  ( -70.20,  -6.77)    1.19                 7
 12/06/2022   01:03:36   (  71.02, 159.20) 12/06/2022   01:03:30  (  71.02, 159.21)    0.65                 6
 12/06/2022   01:51:51   ( -63.99, -24.78) 12/06/2022   01:52:03  ( -63.99, -24.78)    0.26                12
 12/06/2022   02:42:01   (  61.99, 144.23) 12/06/2022   02:42:14  (  61.99, 144.23)    0.05                13
 12/06/2022   03:28:22   ( -48.10, -40.50) 12/06/2022   03:28:52  ( -48.10, -40.53)    1.96                30
 12/06/2022   04:18:16   (  45.10, 128.01) 12/06/2022   04:18:48  (  45.10, 127.98)    2.26                32
 12/06/2022   05:31:28   ( -52.82, 130.06) 12/06/2022   05:32:21  ( -52.79, 130.06)    2.89                53
 12/06/2022   06:21:17   (  55.67, -61.09) 12/06/2022   06:22:13  (  55.67, -61.08)    0.18                56
 12/06/2022   07:08:19   ( -67.32, 115.64) 12/06/2022   07:09:31  ( -67.31, 115.62)    1.24                72