Run: 2026-02-17-01KHNFEN5X9YMX4GJ8Z8MMN937

To figure out the birth year, I start with the information about the 30th birthday. If someone has just turned 30 in a given year, their age in years matches the difference between that year and their birth year. So, for 2023 and a 30th birthday, the math is straightforward: 2023 - 30 = 1993. It's worth checking if there's any trick with the exact date—maybe she hasn't had her birthday yet this year, or maybe the party was before her birthday. But the problem states she "celebrated her 30th birthday," which means she has already turned 30, so her age is definitely 30 in 2023. There's no need to subtract one. The mention of her younger sister, who is 5 years younger, doesn't affect the calculation for Sarah's birth year. It's extra context, but not relevant for determining Sarah's birth year. So, the answer is simply 1993.