Lady Zainab AS passed away (wafat) or was martyred (shahadat). There are two dates mentioned: Rajab 15 and Safar 24. Condolences for Sayyidah Zainab AS, the daughter of Imam Ali AS and Fatima Zahra AS. May Allah SWT bless you as you remember her.
Safar 17 and Safar 30 are two dates mentioned for the martyrdom (shahadat) of Imam Ali ibn Musa al-Reza AS. Condolences. May your mourning for Imam Ridha AS be accepted by Allah SWT.