St. Denis

1:00 p.m.

family;

5:30 p.m.

youth;

Weekly Schedule

Monday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Tuesday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Wednesday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Thursday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

7:15 p.m. – 8:45 p.m.

Adult Choir RehearsalChoir Loft

September to June

Friday

7:00 a.m.

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

8:30 a.m. – 9:30 a.m.

Holy Hourchurch

exposition; adoration; silent

5:00 p.m. – 6:00 p.m.

Confessionchurch

7:00 p.m.

7:45 p.m. – 8:45 p.m.

Holy HourLivestreamchurch

with music; exposition; adoration;

Saturday

7:30 a.m. – 7:30 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

4:00 p.m. – 5:00 p.m.

Confessionchurch

5:30 p.m.

Mass

vigil

Sunday

6:30 a.m. – 7:30 p.m.

Eucharistic Adorationchapel

7:00 a.m.

Mass

9:00 a.m.

Mass

11:00 a.m.

12:30 p.m. – 1:00 p.m.

Children’s Choir Rehearsalchurch

September to June

1:00 p.m.

family;

4:00 p.m. – 5:30 p.m.

Youth/Young Adult Choir Rehearsalchurch

throughout the year

4:30 p.m. – 6:00 p.m.

GriefShare Support GroupSt. Denis Pastoral Office Conference Room

5:30 p.m.

St Gabriel Korean Catholic Center

youth;

Monthly Services

8:30 a.m.

Sacraments – Second Saturdaychurch

second of the month; after the 8:00 am Mass

7:45 p.m.

Confession – Third Fridaychurch

third Friday of the month

Special Events

Fri, Jun 19, 2026

Juneteenth National Independence Day

Juneteenth National Independence Day; Pastoral Office closed; church and chapel open; usual Masses and Holy Hours held

What visitors say about St. Denis

Community Insights

Visitors appreciate the consistent access to the Sacrament of Reconciliation, with daily confessions offered Monday through Saturday.

The priests are highly regarded; Father John is noted for his detail-oriented approach and positive vision, while Father Dennis offers a warm, calming presence and remembers regular attendees.

The music ministry enhances worship, with an excellent choir at the Sunday 11:00 AM Mass and a skilled, spiritually moving Young Adult choir at the 5:30 PM Mass.

The church is known for its very welcoming atmosphere and is conducive to contemplative worship, featuring beautiful architecture and excellent acoustics that keep the interior quiet even during Mass.

Other churches within 10 miles

Nearby Parishes

St. Elizabeth Ann Seton Church

3.4 mi

Next: Tomorrow 8:00 AM

St. Lorenzo Ruiz

Walnut, California

3.6 mi

Next: Tomorrow 7:30 AM

4.8 mi

California State Polytechnic University, Pomona

Chino Hills, California

5.5 mi

View Full Wall Light one→

Prayers in community

Light a candle for this parish or someone you love

Read sacred intentions from travelers and locals, then join the virtual candle wall to add your own prayer.

0 candles burning now at Catholic Index

2151 S Diamond Bar Blvd, Diamond Bar, California 91765-2981

(909) 861-7106 Visit Website →

Schedule updated Jun 5, 2026 · 44 services this week

Archdiocese of Los Angeles

St. Denis

(909) 861-7106

Call Website Watch Homilies259

Schedule updated Jun 5, 2026 · 44 services this week

This Weekend

Saturday Vigil

4:00 p.m.

Confession (before Mass)

5:30 p.m.

Mass

vigil

Sunday

7:00 a.m.

Mass

9:00 a.m.

Mass

11:00 a.m.

1:00 p.m.

family;

5:30 p.m.

youth;

Weekly Schedule

Monday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Tuesday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Wednesday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Thursday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

7:15 p.m. – 8:45 p.m.

Adult Choir RehearsalChoir Loft

September to June

Friday

7:00 a.m.

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

8:30 a.m. – 9:30 a.m.

Holy Hourchurch

exposition; adoration; silent

5:00 p.m. – 6:00 p.m.

Confessionchurch

7:00 p.m.

7:45 p.m. – 8:45 p.m.

Holy HourLivestreamchurch

with music; exposition; adoration;

Saturday

7:30 a.m. – 7:30 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

4:00 p.m. – 5:00 p.m.

Confessionchurch

5:30 p.m.

Mass

vigil

Sunday

6:30 a.m. – 7:30 p.m.

Eucharistic Adorationchapel

7:00 a.m.

Mass

9:00 a.m.

Mass

11:00 a.m.

12:30 p.m. – 1:00 p.m.

Children’s Choir Rehearsalchurch

September to June

1:00 p.m.

family;

4:00 p.m. – 5:30 p.m.

Youth/Young Adult Choir Rehearsalchurch

throughout the year

4:30 p.m. – 6:00 p.m.

GriefShare Support GroupSt. Denis Pastoral Office Conference Room

5:30 p.m.

St Gabriel Korean Catholic Center

youth;

Monthly Services

8:30 a.m.

Sacraments – Second Saturdaychurch

second of the month; after the 8:00 am Mass

7:45 p.m.

Confession – Third Fridaychurch

third Friday of the month

Special Events

Fri, Jun 19, 2026

Juneteenth National Independence Day

Juneteenth National Independence Day; Pastoral Office closed; church and chapel open; usual Masses and Holy Hours held

What visitors say about St. Denis

Community Insights

Visitors appreciate the consistent access to the Sacrament of Reconciliation, with daily confessions offered Monday through Saturday.

The priests are highly regarded; Father John is noted for his detail-oriented approach and positive vision, while Father Dennis offers a warm, calming presence and remembers regular attendees.

The music ministry enhances worship, with an excellent choir at the Sunday 11:00 AM Mass and a skilled, spiritually moving Young Adult choir at the 5:30 PM Mass.

Other churches within 10 miles

Nearby Parishes

St. Elizabeth Ann Seton Church

3.4 mi

Next: Tomorrow 8:00 AM

St. Lorenzo Ruiz

Walnut, California

3.6 mi

Next: Tomorrow 7:30 AM

4.8 mi

California State Polytechnic University, Pomona

Chino Hills, California

5.5 mi

View Full Wall Light one→

Prayers in community

Light a candle for this parish or someone you love

Read sacred intentions from travelers and locals, then join the virtual candle wall to add your own prayer.

0 candles burning now at Catholic Index

2151 S Diamond Bar Blvd, Diamond Bar, California 91765-2981

(909) 861-7106 Visit Website →

Schedule updated Jun 5, 2026 · 44 services this week

Archdiocese of Los Angeles

St. Denis

(909) 861-7106

Call Website Watch Homilies259

Schedule updated Jun 5, 2026 · 44 services this week

This Weekend

Saturday Vigil

4:00 p.m.

Confession (before Mass)

5:30 p.m.

Mass

vigil

Sunday

7:00 a.m.

Mass

9:00 a.m.

Mass

11:00 a.m.

1:00 p.m.

family;

5:30 p.m.

youth;

Weekly Schedule

Monday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Tuesday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Wednesday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

Thursday

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

6:30 p.m.

Mass

7:15 p.m. – 8:45 p.m.

Adult Choir RehearsalChoir Loft

September to June

Friday

7:00 a.m.

7:30 a.m. – 9:00 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

8:30 a.m. – 9:30 a.m.

Holy Hourchurch

exposition; adoration; silent

5:00 p.m. – 6:00 p.m.

Confessionchurch

7:00 p.m.

7:45 p.m. – 8:45 p.m.

Holy HourLivestreamchurch

with music; exposition; adoration;

Saturday

7:30 a.m. – 7:30 p.m.

Eucharistic Adorationchapel

8:00 a.m.

8:30 a.m. – 8:45 a.m.

Confessioncourtyard

after 8:00 am Mass for 15 minutes; or longer if necessary

4:00 p.m. – 5:00 p.m.

Confessionchurch

5:30 p.m.

Mass

vigil

Sunday

6:30 a.m. – 7:30 p.m.

Eucharistic Adorationchapel

7:00 a.m.

Mass

9:00 a.m.

Mass

11:00 a.m.

12:30 p.m. – 1:00 p.m.

Children’s Choir Rehearsalchurch

September to June

1:00 p.m.

family;

4:00 p.m. – 5:30 p.m.

Youth/Young Adult Choir Rehearsalchurch

throughout the year

4:30 p.m. – 6:00 p.m.

GriefShare Support GroupSt. Denis Pastoral Office Conference Room

5:30 p.m.