Simultaneous Nadir Overpasses (SNOs) between NPP and GCOM-C
TLE Epoch: 2021 12 17.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(GCOM-C) GCOM-C Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2021   11:44:12   ( -69.60,-178.87) 12/20/2021   11:45:21  ( -69.50,-177.16)   67.32                69
 12/20/2021   12:34:46   (  68.95, -10.63) 12/20/2021   12:35:59  (  68.92, -10.59)    3.75                73
 12/20/2021   13:25:29   ( -68.92, 156.72) 12/20/2021   13:26:29  ( -68.91, 156.79)    2.94                60
 12/20/2021   14:16:14   (  68.85, -35.87) 12/20/2021   14:16:57  (  68.86, -35.89)    1.83                43
 12/20/2021   15:06:57   ( -68.83, 131.48) 12/20/2021   15:07:28  ( -68.81, 131.41)    3.44                31
 12/20/2021   15:57:43   (  68.80, -61.19) 12/20/2021   15:57:55  (  68.81, -61.20)    0.81                12
 12/20/2021   16:48:26   ( -68.78, 106.16) 12/20/2021   16:48:25  ( -68.81, 106.17)    2.92                 1
 12/20/2021   17:39:12   (  68.76, -86.50) 12/20/2021   17:38:53  (  68.76, -86.51)    0.51                19
 12/20/2021   18:29:55   ( -68.74,  80.84) 12/20/2021   18:29:23  ( -68.76,  80.86)    2.03                32
 12/20/2021   19:20:41   (  68.72,-111.82) 12/20/2021   19:19:51  (  68.70,-111.82)    1.50                50
 12/20/2021   20:11:24   ( -68.70,  55.53) 12/20/2021   20:10:21  ( -68.70,  55.56)    1.43                63
 12/20/2021   21:02:06   (  68.46,-136.85) 12/20/2021   21:00:53  (  68.43,-137.41)   22.81                73
 12/20/2021   21:52:41   ( -68.01,  31.04) 12/20/2021   21:51:31  ( -68.00,  29.42)   67.49                70