1 May 2021

Free Comic Book Day - Australia, Canada, United Kingdom & United States
International Workers Day
La Bealtaine - United Kingdom
Kentucky Derby - United States
National College Decision Day - United States
Spring Day (Kevadpüha) - Estonia
Staffordshire Day - United Kingdom
Worker's Day - South Africa
World Lyme Day - United States
Convocation of the Constitulvt Assembly of Latvia (Latvijas Satversmes Sapulces Sasaukšana) - Latvia
Holy Saturday (Orthodox) ( Велика събота) - Bulgaria
International Day of Solidarity of Workers (Ziua internaţională a solidarităţii oamenilor muncii)
International Workers' Day ( Medzinárodný Deň Pracovníkov)
Labor Day - Dominican Republic & Ukraine
Labor Day / May Day
Labor Day / May Day - Rest Day (A munka ünnepe - Pihenőnap) - Hungary
Labor holiday (Празник рада) - Serbia
Orthodox Holy Saturday (Велика субота) - Serbia
Our Lady of Chapi (Virgen de Chapi) - Peru
State Holiday Austria / Labour Day
International Workers Day (Spanish: Día del Trabajo)
Convocation of the Constituent Assembly of Latvia (Latvijas Satversmes Sapulces Sasaukšana) - Latvia
Labour Day (Ден на труда) - Bulgaria
Maifeiertag/der erste Mai/Tag der Arbeit - Germany & Finland
State Holiday Austria / Labour Day (Staatsfeiertag) - Austria
Worker's Day (Jum il-Ħaddiema) - Malta