What to Expect on First Visits
A more detailed guide than the Where to Start chapter — for the visitor who wants to know exactly what will happen.
Summary. A Shabbat-morning Orthodox service runs 2.5–3 hours: Shacharit, the Torah reading, Musaf, kiddush. A Reform service runs 75–90 minutes with more music and fewer Hebrew prayers. The architecture of any Jewish service is the same: morning blessings, the Shema with its surrounding blessings, the Amidah, the Torah reading (on appropriate days), the closing prayers. A New Jew can follow along in the siddur with the page numbers; the chazzan will usually announce them. The kiddush after services is where the actual community happens.
Orthodox Shabbat Morning
Roughly the timeline. 8:45 AM: Shacharit begins, with Birkot HaShachar and Pesukei D'Zimra. 9:30 AM: Shacharit's central prayers — the Shema and the Amidah. 9:45 AM: The Torah service begins; the Torah is taken from the Ark, the parshah is read aloud (40 minutes to an hour), the haftarah is chanted. 10:30 AM: The d'var Torah (the sermon, 10–20 minutes). 10:50 AM: Musaf, the additional Amidah for Shabbat. 11:30 AM: Aleinu, Mourner's Kaddish, conclusion. 11:45 AM: Kiddush in the social hall. Total: about 3 hours. Speeds vary; some shuls are faster, some slower.
Conservative Shabbat Morning
Essentially the same structure as Orthodox, with some compression. About 2.5 hours total. Egalitarian — women lead some prayers, get aliyot to the Torah, and may serve as chazzan or rabbi. Musical instruments are not used on Shabbat (in keeping with traditional practice). The d'var Torah is often longer and more discussion-oriented.
Reform Shabbat Morning
Shorter — 75–90 minutes is typical. The structure is the same (preliminary, Shema, Amidah, Torah, sermon, closing), but with English readings, contemporary poems and prayers in place of some traditional Hebrew passages, and often musical instruments. The d'var Torah is typically the focal point of the service. The Torah is often read in a triennial cycle (one third of each parshah each year).
Friday Night Kabbalat Shabbat
Across all denominations, 45–75 minutes. The structure: Psalms 95–99 and 29 (preliminary), L'cha Dodi (the central song welcoming the Shabbat bride), Psalm 92 (the Shabbat Psalm), the Shema and its blessings, the Amidah, Kiddush in the synagogue (in some traditions), and the closing. Many shuls follow with a community dinner.
Weekday Services
Shorter and more sparsely attended. Weekday Shacharit: 30–45 minutes. Mincha: 10–15 minutes. Ma'ariv: 15–20 minutes. The weekday Mincha-Ma'ariv combination (back-to-back at sunset) is a common evening minyan, lasting about 30 minutes total.
Practical Etiquette
Sit anywhere not visibly reserved. Some shuls have assigned seats; ask if uncertain.
Stand when the congregation stands. Sit when the congregation sits. Bow at the appropriate moments (you will pick this up).
Do not greet people during the Amidah or the Torah reading.
Turn off your phone before you enter the sanctuary. In Orthodox shuls on Shabbat, do not bring a phone.
If you are called to the Torah for an aliyah and do not know what to do, ask the gabbai — they will guide you through it.
After services, stay for kiddush. This is where you meet people.
Where Denominations Diverge
Differences as noted in the article.
Sources
Rabbi Hayim Halevy Donin, To Pray as a Jew — full chapter on shul etiquette.
Anita Diamant, Living a Jewish Life.
Further Reading
Rabbi Lawrence A. Hoffman, The Way Into Jewish Prayer.