Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 1 18.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2021   08:47:02   (  78.68,  19.52) 01/30/2021   08:48:14  (  78.65,  19.57)    2.69                72
 01/30/2021   09:37:58   ( -78.68,-173.20) 01/30/2021   09:38:59  ( -78.66,-173.15)    2.34                61
 01/30/2021   10:29:02   (  78.69,  -5.88) 01/30/2021   10:29:44  (  78.66,  -5.83)    3.79                42
 01/30/2021   11:19:58   ( -78.69, 161.41) 01/30/2021   11:20:29  ( -78.66, 161.45)    3.43                31
 01/30/2021   12:11:03   (  78.67, -31.52) 01/30/2021   12:11:15  (  78.70, -31.46)    3.34                12
 01/30/2021   13:01:59   ( -78.67, 135.77) 01/30/2021   13:02:00  ( -78.70, 135.82)    3.58                 1
 01/30/2021   13:53:03   (  78.69, -56.91) 01/30/2021   13:52:45  (  78.70, -56.86)    2.16                18
 01/30/2021   14:43:59   ( -78.69, 110.38) 01/30/2021   14:43:30  ( -78.71, 110.42)    2.33                29
 01/30/2021   15:35:03   (  78.70, -82.30) 01/30/2021   15:34:15  (  78.71, -82.26)    1.10                48
 01/30/2021   16:25:59   ( -78.70,  84.99) 01/30/2021   16:25:00  ( -78.71,  85.02)    1.15                59
 01/30/2021   17:16:59   (  78.85,-106.69) 01/30/2021   17:15:49  (  78.86,-108.62)   41.45                70