Born on 21 January: Star Sign, Birthstone and Birthday Facts

October 7, 2026

If your birthday is on 21 January, your star sign is Aquarius (the Water Bearer, 20 January to 18 February), your birthstone is garnet and your birth flower is carnation and snowdrop.

21 January is the 21st day of the year. In 2026 it falls on a Wednesday, and in 2027 on a Thursday.

21 January is close to the change of star sign, so some people born today read the neighbouring sign too. The exact cut-off shifts slightly from year to year.

Aquarius personality traits

Original and independent
Forward-thinking
Humanitarian
Quirky
A loyal friend

Birthday gift ideas for 21 January

A quirky gadget
A charity gift in their name
A science kit
Something with garnet, the January birthstone
A bunch of carnations, the January birth flower

Birthday messages for a 21 January birthday

Happy birthday to the most original person I know.
Stay weird and wonderful. Happy birthday, Aquarius!
Wishing you a year as unique as you are.
Happy 21st of January! Hope your day is as brilliant as you are.

Key things to remember

Pair a star sign card with a small birthstone gift for a personal touch.

Frequently asked questions

What star sign is 21 January?

Aquarius (20 January to 18 February).

What is the birthstone for 21 January?

Garnet, the birthstone for everyone born in January.

What is the birth flower for 21 January?

Carnation and snowdrop.

What day is 21 January 2026?

Wednesday.

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