Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NPP
TLE Epoch: 2022 12 4.  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   19:12:18   ( -79.24,  40.08) 12/05/2022   19:11:14  ( -79.24,  40.02)    1.14                64
 12/05/2022   20:03:12   (  79.56,-155.10) 12/05/2022   20:02:09  (  79.56,-155.20)    2.15                63
 12/05/2022   20:52:49   ( -77.72,  23.78) 12/05/2022   20:52:04  ( -77.72,  23.79)    0.31                45
 12/05/2022   21:43:46   (  78.22,-171.44) 12/05/2022   21:43:02  (  78.22,-171.47)    0.76                44
 12/05/2022   22:32:57   ( -74.90,   8.78) 12/05/2022   22:32:31  ( -74.90,   8.82)    1.30                26
 12/05/2022   23:23:59   (  75.70, 173.69) 12/05/2022   23:23:34  (  75.70, 173.70)    0.27                25
 12/06/2022   00:12:30   ( -69.95,  -6.41) 12/06/2022   00:12:23  ( -69.94,  -6.37)    1.35                 7
 12/06/2022   01:03:36   (  71.03, 159.18) 12/06/2022   01:03:30  (  71.02, 159.20)    0.69                 6
 12/06/2022   01:51:44   ( -63.61, -24.44) 12/06/2022   01:51:56  ( -63.61, -24.44)    0.16                12
 12/06/2022   02:42:00   (  61.94, 144.27) 12/06/2022   02:42:13  (  61.94, 144.27)    0.09                13
 12/06/2022   03:28:16   ( -47.76, -40.36) 12/06/2022   03:28:46  ( -47.76, -40.39)    1.92                30
 12/06/2022   04:18:16   (  45.11, 128.00) 12/06/2022   04:18:48  (  45.11, 127.97)    2.25                32
 12/06/2022   05:31:27   ( -52.86, 130.09) 12/06/2022   05:32:20  ( -52.84, 130.08)    2.67                53
 12/06/2022   06:21:15   (  55.77, -61.03) 12/06/2022   06:22:11  (  55.77, -61.02)    0.16                56
 12/06/2022   07:08:14   ( -67.58, 115.95) 12/06/2022   07:09:26  ( -67.58, 115.94)    1.03                72