VNP46A2 - Hours of Light Capture
Posted: Wed Nov 02, 2022 1:38 pm America/New_York
Hello,
I have a question regarding which night the data are referring to for a specific Julian calendar day. For example, is the data captured for January 19th, 2012 (Julian day 19 of the year 2012) referring to the night lights captured between 00:00 ~ 06:00 of the 19th? Or, is it referring to the night of the 19th to the morning of the 20th which would be 20:00 of the 19th to 06:00 of the 20th? My assumption here is that the tile in this example is not near high latitudes where night light hours seasonally vary.
Thanks.
I have a question regarding which night the data are referring to for a specific Julian calendar day. For example, is the data captured for January 19th, 2012 (Julian day 19 of the year 2012) referring to the night lights captured between 00:00 ~ 06:00 of the 19th? Or, is it referring to the night of the 19th to the morning of the 20th which would be 20:00 of the 19th to 06:00 of the 20th? My assumption here is that the tile in this example is not near high latitudes where night light hours seasonally vary.
Thanks.