Daylight savings time messes up my biological clock... In El Salvador it's just one time zone with no daylights savings time... Sunrise = morning, Sunset = night.
Discussion
This is not 20h30 to my bio clock...
It's a science project that United States has going on for years because the longer a human is in the moonlight something with the heart so in the Winter. In United States people get more heart conditions look it up. That's why they change the time in United States. Look it up is online is out there.