Star Festival (held in July or August); Tanabata; Festival of the Weaver
「織女」 has other readings with different meanings.
female weaver
the five festivals (January 7, March 3, May 5, July 7 and September 9)
七夕に願い事を書く。
I write wishes on Tanabata.
七夕を祝って楽しむ。
I celebrate and enjoy Tanabata.
七夕に願い事をする。
I make wishes on Star Festival.