Tisha B'av 2019 begins at nightfall on August 10, and concludes at nightfall on Sunday, August 11.

The fast of Tisha b'Av is observed on the Hebrew calendar date of 9 Av (10 Av, when 9 Av is Shabbat). Here are the coinciding secular dates for the upcoming years:

2020:   July 29-30
2021:   July 17-18
2022:   August 6-7
2023:   July 26-27 2024:   August 12-13
2025:   August 2-3

Note: The Jewish calendar date begins at sundown of the night beforehand. Thus the fast begins with sunset of the first secular date listed, and concludes at nightfall the following day.

See Also

When is Rosh Hashanah in 2019, 2020, and 2021?
When is Yom Kippur in 2019, 2020, and 2021?
When is Sukkot in 2019, 2020, and 2021?
When is Shemini Atzeret / Simchat Torah in 2019, 2020, and 2021?
When is Chanukah in 2020, 2021, 2022, 2023, 2024 and 2025?
When is Purim in 2020, 2021, 2022, 2023, 2024 and 2025?
When is Passover in 2020, , 2021, 2022, 2023, 2024 and 2025?
When is Shavuot in 2020, 2021, 2022, 2023, 2024 and 2025?