National Technology Day (Libya)

National Technology Day (Libya)

World Milk Day

World Milk Day (International)

Public holidays in Tunisia

Victory Day (Tunisia)

Crop Over

The beginning of Crop over, celebrated until the first Monday of August. (Barbados)

Public holidays in Palau

President's Day (Palau)

Public holidays in Indonesia

Pancasila Day (Indonesia)

Arbor Day

National Tree Planting Day (Cambodia)

Public holidays in Mexico

National Maritime Day (Mexico)

Madaraka Day

Madaraka Day (Kenya)

Parents' Day

Global Day of Parents (International)

Gawai Dayak

Gawai Dayak, harvest festival in the state of Sarawak (Malaysia)

June 1 (Eastern Orthodox liturgics)

Christian feast day:
June 1 (Eastern Orthodox liturgics)

Pamphilus of Caesarea

Christian feast day:
Pamphilus of Caesarea (Roman Catholic only): 256

Ronan of Locronan

Christian feast day:
Ronan of Locronan

Justin Martyr

Christian feast day:
Justin Martyr (Roman Catholic, Eastern Orthodox, Anglican, Lutheran)