The fast in Av is Tisha B'Av, the Ninth of Av, and it is the day the Jewish people set aside each year to mourn the destruction of both Holy Temples in Jerusalem and a long list of tragedies that seem to keep landing on this same date. This year it begins at sundown on Wednesday, July 22, 2026, and ends at nightfall the following night, a full twenty-five hours of fasting and abstention. Where I am writing from, in the flat summer heat of central Israel, the fast opens just before a quarter to eight in the evening, right as the day finally loosens its grip.
I want to answer the plain question first, before we go anywhere deeper, because that is what most people are actually looking for. Tisha B'Av is a day of grief. We do not eat or drink, we do not bathe for pleasure, we sit low to the ground, and we read the Book of Lamentations by a dim light. But here is the part I keep coming back to, the part that makes this day worth writing about at all: the month of Av is built so that its lowest point becomes the doorway to its highest. The fast is not the end of the story. It only looks that way from inside it.
Key Takeaways
Tisha B'Av (the Ninth of Av) commemorates the destruction of the First and Second Temples, which fell on the same Hebrew date roughly 655 years apart.
In 2026 the fast runs from sundown on July 22 to nightfall on July 23, and it carries five prohibitions similar to Yom Kippur.
It is the endpoint of the Three Weeks of mourning that begin with the fast of the 17th of Tammuz.
The Sages saw the inner theme of the month of Av as Ta'avah, desire, an energy that can either shatter or unite depending on how we hold it.
Six days after the fast comes Tu b'Av, one of the happiest days in the calendar, which is not a coincidence but the design of the month.
Why Does One Date Carry So Much Grief?
There is something almost unbearable about the arithmetic of this day. The First Temple was destroyed by the Babylonians in 586 BCE. The Second Temple was destroyed by the Romans in 70 CE. Two catastrophes, separated by centuries, and yet tradition places them both on the ninth of Av, as if the calendar itself has a wound that reopens on schedule.
The Mishnah, in the tractate Taanit, lists five calamities that struck our ancestors on this date. The spies returned from the Land of Israel with a report so full of fear that the whole generation wept and lost their chance to enter the land. The First Temple fell. The Second Temple fell. The fortress city of Betar was crushed at the end of the Bar Kochba revolt. And the Temple Mount was plowed over, the holiest place turned to bare furrows. Later generations kept adding to the list, and the expulsion from Spain and other expulsions and massacres seemed to find their way to this same square on the calendar.
I do not think we are meant to treat that as superstition, and I also do not think we are meant to explain it away. The tradition reads it as meaning, not as coincidence. When a single day gathers so much loss, the message is not that the date is cursed. It is that grief, like joy, has a season, and this is the season the Jewish soul has agreed to feel it fully rather than scatter it thinly across the year. That may be the healthiest thing about the whole observance, if I am honest. It gives sorrow a container.
What Actually Happens on the Fast?
Tisha B'Av does not arrive out of nowhere. It sits at the end of a mourning period called the Three Weeks, which opens with a lesser fast on the 17th of Tammuz, the day the walls of Jerusalem were breached before the city fell. Those three weeks tighten as they go. In the final stretch, known as the Nine Days, many refrain from meat and wine, from laundry and new clothes, from the ordinary pleasures that we barely notice until we are asked to put them down. By the time the ninth of Av begins, the mood has been narrowing for weeks.
The fast itself carries five restrictions, and this is one of the details that surprises people who assume a fast is only about food. We refrain from eating and drinking, from washing the body for comfort, from anointing with lotions and creams, from wearing leather shoes, and from marital intimacy. In that fivefold shape it resembles Yom Kippur far more than the other minor fasts, which ask only that we skip food and water. The difference in tradition is that Yom Kippur is a fast of the Torah itself, while Tisha B'Av was established later by the prophets and Sages, which is why our tradition also teaches that it is destined one day to be undone.
In the evening we read Eichah, the Book of Lamentations, usually by candlelight and in a low, aching melody. We sit on the floor or on low stools, the posture of a mourner. In the morning come the Kinot, the elegies, which walk through century after century of Jewish pain. And then something quietly shifts around midday, which I will come back to, because it is the hinge on which this whole day turns.
The Reframe: Av Is the Month of Desire, and the Fast Is Its Correction
Here is where I want to offer the way I have come to understand this day, which grows out of the framework I call the Spiral of Time. Every month of the Hebrew year carries an inner character, a specific energy that colors the way we feel and the work we are given to do. The energy of Av, as the Sages map it, is Ta'avah, desire or craving. It is the peak of summer, the sun high and the nights still warm and dry, the body pulled outward toward pleasure, toward the river and the crowd and the wanting of things.
Desire is not a flaw. I would call it something closer to gravity, the pull that draws people into orbit around each other, the force behind love itself. But like any strong force it can build or it can burn. The historical tragedies of Av read, in this light, as desire gone wrong: a generation that desired the false comfort of the spies over the promise of the land, a people fractured by sinat chinam, the baseless hatred that our Sages named as the cause of the Second Temple's fall. Craving turned inward and sour, and it took the house of God down with it.
So the fast is not only mourning. It is a tikkun, a rectification, aimed precisely at that misdirected wanting. For one day we withdraw from food and comfort and touch, not to punish the body but to ask it a question. What do we actually long for. When the small hungers are quieted, the large hunger underneath them, the ache for wholeness, for a rebuilt world, for each other, has room to be heard.
From Tisha B'Av to Tu b'Av: The Turn Is Built Into the Month
This is the detail that changed how I feel about the whole fast, and it is the reason I find the month of Av more tender than frightening. Six days after Tisha B'Av, the lowest point of the year, comes Tu b'Av, the fifteenth of Av, which the Mishnah names as one of the two most joyful days the people ever knew. On that day the unmarried women of ancient Israel went out to dance in the vineyards, and matches were made, and the season of mourning ended in the making of new families. The same month that holds the deepest rupture holds, less than a week later, the deepest connection.
I do not think that is an accident of scheduling. It seems to me that the architecture of Av is teaching the exact lesson the fast is trying to install in us. The energy of desire that, unbalanced, tears a nation apart is the very same energy that, elevated, binds two people together for life. Nothing new had to be added between the ninth and the fifteenth. The same force simply found its right direction. That is what the tradition means, I believe, when it says the raw material of destruction and the raw material of redemption are one and the same.
And this is why the day itself begins to lift around midday, why the mood after the noon hour grows less bleak. The prophet Zechariah promised that these fasts would one day become festivals, days of joy and gladness for the House of Judah. Our tradition even carries the startling teaching that the Messiah is born on Tisha B'Av, that the seed of redemption is planted on the very date of the ruin. You do not wait for the grief to pass before hope arrives. The two are folded together, which is the whole meaning of the spiral: the descent was always shaped to become an ascent.
How to Enter the Fast With More Than Just Hunger
If you want this day to be more than an uncomfortable stretch of not eating, a little intention goes a long way. Here is what I would gently suggest, and you can take only what fits you.
Ease in through the Nine Days, do not slam into the fast cold. In the days before, let some ordinary pleasures fall away on purpose. When you arrive at the ninth of Av, the withdrawal will feel like a continuation rather than a shock, and your heart will already be in a quieter register.
Read Eichah slowly, even a single chapter. You do not need to be a scholar. Sit low, read Lamentations in whatever language reaches you, and let one image land. The point is not to finish the text but to let the text finish something in you.
Name what you are actually mourning. The Temple is the national grief, but most of us carry private ruins too, a relationship that fell, a version of ourselves we lost. This is the one day the calendar hands you to feel those things without apology, so use it.
Ask the desire question directly. Somewhere in the fast, when the hunger is loudest, pause and ask what you truly want underneath the craving for lunch. It is a strange and clarifying exercise. The empty stomach makes the real longing easier to hear.
Watch for the turn after midday. Do not white-knuckle straight through to nightfall. Notice how the tradition lets the mood soften in the afternoon, and let yourself soften with it, turning your thoughts toward what could be rebuilt rather than only what was lost.
Break the fast with someone. Av's correction is connection. If you can, end the day at a table with other people, because the whole point of the month is desire turned toward one another rather than away.
Frequently Asked Questions
What is the fast in Av called, and what does it commemorate? The fast in Av is Tisha B'Av, meaning the Ninth of Av. It commemorates the destruction of both the First and Second Temples in Jerusalem, along with other tragedies that tradition ties to this date. It is widely regarded as the saddest day in the Jewish calendar and falls at the close of a three-week mourning period.
How long does the Tisha B'Av fast last? Tisha B'Av is a full-day fast of about twenty-five hours. It begins at sundown and ends at nightfall the next evening, unlike the minor fasts that start only at dawn. In 2026 it runs from the evening of July 22 to nightfall on July 23, and it carries five restrictions rather than just abstaining from food.
How is Tisha B'Av different from Yom Kippur? Both are full-day fasts with five prohibitions, including bathing and leather shoes, so they feel similar in structure. The difference is source and mood. Yom Kippur is commanded in the Torah and is a solemn but hopeful day of atonement, while Tisha B'Av was established later by the prophets and Sages and is a day of mourning that tradition says will one day become a festival.
Why does the mood of Tisha B'Av change in the afternoon? Tradition builds a turn into the day itself. The morning is the deepest grief, but from around midday the observance grows less severe and the liturgy leans toward comfort. This reflects the belief, drawn from Zechariah, that these fasts are destined to become days of joy, and the teaching that redemption is seeded on this very date.
What is the connection between Tisha B'Av and Tu b'Av? They are two faces of the same month. Tisha B'Av, on the ninth, is the low point of rupture and loss. Tu b'Av, on the fifteenth, is one of the happiest days in the calendar, historically a day of matchmaking and joy. The month of Av moves from one to the other on purpose, showing how the energy of desire can shift from destruction to connection.
The Day the Ruin Becomes a Seed
I began by saying that from inside the fast, it looks like the end of the story. Sitting on the floor in the heat, reading a book named for weeping, you would be forgiven for feeling that the grief has no floor. That is exactly the feeling the day is designed to hold, and I would not rush anyone through it.
But the month knows something the ninth of Av does not yet reveal. In six days the vineyards fill with dancing. In the tradition's boldest claim, the Redeemer is being born on the very afternoon we mourn. The same desire that once brought the house down is the desire that will, when we finally aim it right, build the next one. So we fast, and we weep, and we mean it. And then we lift our eyes toward the fifteenth, because in the calendar of the soul, the deepest descent was never the destination. It was only the turning point.



