Read current frame of second.
Or tenth of a second, either way, some time monitoring way would help with making smooth animations with very little work.
Right now, my BG IMG is hue shifted by the percent of a minute (50% = 30 second) but it jumps by over 1.5% each tick, making all my percent of a minute animations jumpy and sharp to the eye. Even just adding in a millisecond value instead of a frame # would work (and have a better fitting into the time and date functions)