
Tisha B'Av is the Ninth of Av. It is a fast commemorating the destruction of the two Temples.
Tu B'Av is a minor Jewish holiday of love. It is observed on the 15th day of the Hebrew month of Av.

This article describes how to make changes to a Yahrzeit + Anniversary calendar that you downloaded, exported or subscribed to in a calendar app like Outlook, Google Calendar / Android, or Apple (iOS, iPhone, iPad or Mac). These instructions apply to personal events such as yahrzeits, Hebrew Birthdays, and Hebrew Anniversaries.
How to make changes to a Yahrzeit + Anniversary calendar
https://www.hebcal.com/home/632/how-to-make-changes-to-a-yahrzeit-anniversary-calendar

API calls are returning status code of 400
I'm making a call with this url
I've been making this call for a while now but 2 days ago I started getting "error": "Locale 'es' not found" and status of 400

Mishnah Torah
I know that Hebcal already has some the daily learning schedule's such as Daf Yomi and Mishna Yomi. Can you perhaps add the Daily Rambam study schedule? Where you read one chapter of the Mishnah Torah. I know that it restarts on April 22nd.

Hi, thanks for using Hebcal.
If you'd like a compact printable calendar with just the date and weekly Torah portion, you can use our Candle-lighting Times Year at a Glance page for your city.
If you'd like a printable calendar with much more detail, see our Parashat ha-Shavua by Hebrew year pages.
If you'd like a calendar feed with the weekly Torah portion that you can import into Microsoft Outlook, iPhone, iPad, macOS Desktop Calendar, Android (via Google Calendar), or to any desktop program that supports iCalendar (.ics) files, please visit this our simple calendar downloads page and choose either Torah Readings (Diaspora) or פרשת השבוע - ישראל
Customer support service by UserEcho