祝 means to celebrate and is a JLPT N2 kanji. It has 9 strokes and uses the deity / shrine radical (礻).
Stroke order · 9 strokes
On'yomi (音読み)
シュク、シュウ
Kun'yomi (訓読み)
いわ(う)
Radical
礻 · deity / shrine
Strokes
9
How to remember 祝
In front of the altar (礻) the elder brother (兄) recites blessings — celebration. お祝い (congratulations/gift), 祝日 (national holiday) — the red days on the calendar.