by DavidLeodis » Sun Apr 14, 2013 9:46 pm
The information brought up through the "This week the Sun" link had an image that seems to be the same as the APOD. In the caption to the linked image it states "NASA's Solar Dynamics Observatory captured this image of an M6.5 class flare at 3:16 EDT on April 11, 2013", which will be 07:16 under Universal Time (UT). In the explanation to the APOD it however states the image was recorded "at 0711 UTC". My understanding is that EDT is the Eastern Daylight Time zone in mainland United States and is 4 hours behind UT and that for general use Universal Coordinated Time (UTC despite the differing order of letters) is the same as UT, so I wonder if the time in the explanation is a mistyping? Unless I misunderstand UTC I believe even where very precise times are needed there will still be nothing like as much as 5 minutes difference (even allowing for rounding off of times).
The information brought up through the "This week the Sun" link had an image that seems to be the same as the APOD. In the caption to the linked image it states "NASA's Solar Dynamics Observatory captured this image of an M6.5 class flare at 3:16 EDT on April 11, 2013", which will be 07:16 under Universal Time (UT). In the explanation to the APOD it however states the image was recorded "at 0711 UTC". My understanding is that EDT is the Eastern Daylight Time zone in mainland United States and is 4 hours behind UT and that for general use Universal Coordinated Time (UTC despite the differing order of letters) is the same as UT, so I wonder if the time in the explanation is a mistyping? Unless I misunderstand UTC I believe even where very precise times are needed there will still be nothing like as much as 5 minutes difference (even allowing for rounding off of times).