It’s not a strange question at all! Birth runes are a modern way of looking at the ancient Norse runic alphabet. While it isn’t historically or culturally accurate, that doesn’t mean we can’t find meaning in the way the modern world has worked with these runes, too. I can’t find a source on birth runes, but @Susurrus actually has a post about runes and finding your birth rune.
→ Birthdate Rune & Birth Hour Rune - What's Your's?
According to that chart, my birth runes would be Hagalaz and Raidho.
You can also check out these posts below to learn more about the runes in general.
→ Studying the Elder Futhark Runes
→ The Three Aettir in The Elder Futhark
→ The 3 Aettirs of the Elder Futhark
As well as the Spells8 course on runes!