The Ten Days of Repentance: What Happens Between Rosh Hashanah and Yom Kippur
Between Rosh Hashanah and Yom Kippur there are ten days that most calendars ignore. In Jewish tradition they have a name - Aseret Yemei Teshuvah, the Ten Days of Repentance - and they carry a specific job.
In 2026 they run from 11 September through 21 September. Understanding what happens in them explains why the Jewish New Year feels so different from the secular one.
The window
The traditional image is a book. On Rosh Hashanah the coming year is written; on Yom Kippur it is sealed. The days between are the interval in which the writing can still change.
Whatever you make of the theology, the psychological structure is worth noticing. Most cultures mark a new year with a single night. Jewish tradition allows ten days - long enough to actually do something, short enough to create pressure.
What teshuvah actually means
The word is usually translated as "repentance," which carries an English connotation of guilt and self-punishment. The Hebrew root means something else: to return.
The assumption underneath is that a person's baseline state is fundamentally decent, and that wrongdoing is a departure from it rather than an expression of it. Teshuvah is not becoming someone new. It is coming back.
Maimonides set out what the process requires: recognising the wrong, feeling genuine regret, stopping the behaviour, and resolving not to repeat it. The test of complete teshuvah, he wrote, is finding yourself in the same situation again and choosing differently.
The part people skip
Here is the demanding piece. Jewish tradition draws a sharp line between two categories of wrongdoing.
Offences between a person and God can be addressed through prayer and the Yom Kippur fast. Offences between one person and another cannot. For those, tradition is unambiguous: Yom Kippur does not atone until you have asked the person directly.
No amount of fasting substitutes for the conversation. That is why the ten days exist as a working period rather than a purely reflective one - they are the time set aside for the apologies.
How people mark the days
Practice varies, but common threads:
- Selichot - penitential prayers, said early in the morning in many communities
- Reaching out - calls, messages, and conversations with people you have hurt or fallen out with
- Tzedakah - charitable giving, traditionally increased during this period
- Personal accounting - cheshbon hanefesh, an honest inventory of the year
Shabbat Shuvah, the Sabbath falling between the two holidays, is traditionally when rabbis give one of the year's two major sermons.
Why it lands
The structure works on people who are not religious at all. Ten days with a clear task - repair what you broke - is a more useful proposition than a resolution made at midnight and abandoned by February.
It is also uncomfortable in a productive way. Most of us can name, without much effort, someone we owe an apology. The tradition simply insists you do something about it within a fixed window.
If you want to try it
You do not need to be observant to use the frame. Pick the conversation you have been avoiding. Have it before Yom Kippur.
That is the whole practice, stripped to its core. The prayers and the fasting exist around it, but the conversation is the part tradition treats as non-negotiable.
Ketiva v'Chatima Tova - may you be inscribed and sealed for good.
