Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NPP
TLE Epoch: 2022 12 3.  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   ( -79.28,  39.78) 12/05/2022   19:11:15  ( -79.28,  39.71)    1.41                64
 12/05/2022   20:03:14   (  79.63,-155.70) 12/05/2022   20:02:11  (  79.63,-155.81)    2.36                63
 12/05/2022   20:52:52   ( -77.85,  23.15) 12/05/2022   20:52:07  ( -77.85,  23.15)    0.05                45
 12/05/2022   21:43:48   (  78.30,-171.92) 12/05/2022   21:43:04  (  78.31,-171.96)    0.96                44
 12/05/2022   22:33:01   ( -75.10,   8.21) 12/05/2022   22:32:35  ( -75.10,   8.25)    1.05                26
 12/05/2022   23:24:02   (  75.85, 173.21) 12/05/2022   23:23:37  (  75.85, 173.21)    0.08                25
 12/06/2022   00:12:37   ( -70.32,  -6.99) 12/06/2022   00:12:30  ( -70.32,  -6.96)    1.14                 7
 12/06/2022   01:03:40   (  71.25, 158.81) 12/06/2022   01:03:34  (  71.24, 158.82)    0.50                 6
 12/06/2022   01:51:54   ( -64.17, -24.94) 12/06/2022   01:52:06  ( -64.17, -24.95)    0.31                12
 12/06/2022   02:42:08   (  62.40, 143.90) 12/06/2022   02:42:21  (  62.40, 143.90)    0.08                13
 12/06/2022   03:28:25   ( -48.29, -40.58) 12/06/2022   03:28:55  ( -48.29, -40.61)    2.00                30
 12/06/2022   04:18:15   (  45.06, 128.02) 12/06/2022   04:18:47  (  45.06, 127.99)    2.32                32
 12/06/2022   05:31:25   ( -52.97, 130.14) 12/06/2022   05:32:18  ( -52.94, 130.14)    2.94                53
 12/06/2022   06:21:22   (  55.36, -61.26) 12/06/2022   06:22:18  (  55.36, -61.26)    0.07                56
 12/06/2022   07:08:17   ( -67.41, 115.75) 12/06/2022   07:09:29  ( -67.40, 115.73)    1.31                72