01st

April Fool's Day
Iroquois Corn Planting Festival (Native American)
Fortuna Virilis (Roman)
Loki's Day (Norse)
Veneralia (Roman)
Festival of Kali (Indian)
Day of Hathor (Egypt)

Apr 01 April Fools' Day

Apr 01 Passion Sunday (Lent)

Apr 01 Tree Planting Day (China)

02nd

St. Urban's Day
Battle of the Flowers (French)

Apr 02 Saint Francis of Paola

03rd

Birthday of Buddha

04th

Megalesia Begins (Roman)

05th

Tomb Sweeping Day (Chinese)
Fortuna's Day (Roman)
Festival of Kwan Yin (Chinese, Japanese)

Apr 05 Glarus Festival (Switzerland)

06th

Ching Ming (Chinese)

Apr 06 Founding of the Mormon Church (Mormonism)

07th

New Moon
Feast of Blagini (Romanian)

Apr 07 Fast of the Firstborn (Omer)

08th

Hana Matsuri (Japanese)
Mounichia of Artemis (Greek)

Apr 08 Passover (Omer)

Apr 08 Buddha Bathing Festival (Taiwan)

10th

Megalesia Ends (Roman)

11th

Feast of San Leo (Mexican)
Day of Anahit (Armenian)

12th

Cerealia (Roman)

13th

Baisakhi (Hindu)
Libertas (Roman)

Apr 13 Songkran (Thailand)

Apr 13 Thomas Jefferson's Birthday (USA)

14th

Sommarsblot (Norse)
St. Tiburtius

Apr 14 Bengali New Year (Bangladesh)

15th

Buddhist New Year
Feast of Tellus Mater (Roman)
Festival of Ba'ast (Egyptian)

16th

St. Padarn's Day (Celtic)
Feast of St. George (Byzantine)

Apr 16 De Diego Day (Puerto Rico)

17th

Eid-el-Adha (Moslem)

Apr 17 Flag Day (American Samoa)

18th

Thargelia (Greek)
Rava Navami (Hindu)

19th

Women's Celebration (Balinese)

20th

Yaqui Pageant (Native American)
Egg Rolling Day (British)

21st

Feast of Pales (Roman)
Passover Begins (Jewish)
Parilia (Roman)

22nd

Full Moon
Earth Day
Dragon Boat Festival (Chinese)
Festival of Isthar (Babylonian)
Feast of the Divine Couple (Japanese)
Feast of Elaphebolia (Greek)

Apr 22 Discovery Day (

Apr 22 Queen Isabella Day (Spain

23rd

St. George's Day (British)
Venus of the Vinalia (Roman)
Sigurd's Day (Germanic)
St. George's Day
Floralia (Central & Eastern European)

Apr 23 Saint George

24th

Children's Day (Icelandic)
Apr 24 Martyrs' Day (Armenia)

25th

Feast of San Jorge (Mexican)
Robigalia (Roman)
Cuckoo Day (English)

Apr 25 Saint Mark

26th

Flower Parade (Dutch)

27th

Orthodox Easter

Apr 27 Revolution Day (Afghanistan)

28th

Floralia Begins (Roman)

29th

Passover Ends (Jewish)
Casse Canarie (Haitian Voodoo)

30th

Walpurgisnacht (Germanic)
Floralia Ends (Roman)
Beltane Begins at Sundown (Celtic, Wiccan)
Salus
St. Sophia's Day
Yakima Tribe Root Festival (Native American)

Apr 30 Saint Catherine of Siena

Apr 30 May Day Eve (Switzerland)