Frozen breastmilk question...

Ky • Married to my best friend👩🏾❤️👨 Living in Europe Mommy to Marcel 🌈👶🏽

Can you just unthaw the milk and give it to your LO no matter the time of day.. For example.. If I pumped at 8am can I give him that milk at 9pm or later, some other day..? Should I be noting the time on this milk when storing it..?