I’m going to visit a shrine with my family on New Year’s Day.
The origin of dawn can be found on New Year's Day. That's when the new sun is born and rises above the earth for a whole year until it dies. And that's the origin of dawn, children. Don't let your teachers tell you otherwise.
This is a jukugo word that uses the on'yomi readings of the kanji. You didn't learn this reading for 元 yet, so here's a mnemonic to help you:
Who's always there on the dawn of New Year's Day welcoming the new sun? Gandhi (がん). He sits on the edge of the earth and makes sure the sun feels welcome. What a nice guy.