Upcoming Holidays and Observances
| Independence Day in Bulgaria | September 22, 2021 | today |
| National Day in Saudi Arabia | September 23, 2021 | 3:0:7 |
| Our Lady of Las Mercedes in Dominican Republic | September 24, 2021 | 1 day |
| Heritage Day in South Africa | September 24, 2021 | 1 day |
| International Coffee Day | September 29, 2021 | 6 days |
| World Maritime Day | September 30, 2021 | 7 days |
| Farikal Day in Norway | September 30, 2021 | 7 days |
| Morelos' birthday in Mexico | September 30, 2021 | 7 days |
| Tuvalu Day in Tuvalu | October 1, 2021 | 8 days |
| International Day of Older Persons | October 1, 2021 | 8 days |
| Cyprus Independence Day in Cyprus | October 1, 2021 | 8 days |
| National Day in Hong Kong and China Macau |
October 1, 2021 | 8 days |
| Independence Day in Nigeria | October 1, 2021 | 8 days |
| Russian Ground Forces Day in Russia | October 1, 2021 | 8 days |
| Gandhi Jayanthi in India | October 2, 2021 | 9 days |
| Russian Aerospace Defence Forces Day in Russia | October 4, 2021 | 11 days |
| Queen's Birthday (1st Monday in October) in Australia | October 4, 2021 | 11 days |
| Teacher's Day in Russia | October 5, 2021 | 12 days |
| World Teachers' Day | October 5, 2021 | 12 days |
| World Egg Day | October 8, 2021 | 15 days |
| Battle of Angamos in Peru | October 8, 2021 | 15 days |
| Moi Day in Kenya | October 10, 2021 | 17 days |
| World Mental Health Day | October 10, 2021 | 17 days |
| Curacao Day in Curaçao | October 10, 2021 | 17 days |
| White Sunday in Samoa | October 10, 2021 | 17 days |
| Fiji Day in Fiji | October 10, 2021 | 17 days |
| National Heroes' Day in Bahamas | October 11, 2021 | 18 days |
| Columbus Day in United States | October 11, 2021 | 18 days |
| Mother's Day in Malawi | October 11, 2021 | 18 days |
| Thanksgiving Day in Canada | October 11, 2021 | 18 days |
| Hispanic Day in Spain | October 12, 2021 | 19 days |
| Columbus Day | October 12, 2021 | 19 days |
| Mother's Day in Belarus | October 14, 2021 | 21 days |
| Double Ninth Festival in China | October 14, 2021 | 21 days |
| Evacuation Day in Tunisia | October 15, 2021 | 22 days |
| Dessalines Day in Haiti | October 17, 2021 | 24 days |
| Mother's Day in Argentina | October 17, 2021 | 24 days |
| Mawlid | October 18, 2021 | 25 days |
| Mother Teresa Beatification Day in Albania | October 19, 2021 | 26 days |
| Mashujaa Day in Kenya | October 20, 2021 | 27 days |
| Caps Lock Day | October 22, 2021 | 29 days |
| Mother-In-Law Day | October 24, 2021 | 31 days |
| Pahang State Ruler's Birthday in Malaysia | October 24, 2021 | 31 days |
| Sovereignty Day in Slovenia | October 25, 2021 | 32 days |
| October Holiday in Ireland | October 25, 2021 | 32 days |
| Labour Day in New Zealand | October 25, 2021 | 32 days |
| International Artist Day | October 25, 2021 | 32 days |
| World Pasta Day | October 25, 2021 | 32 days |
| Angam Day in Nauru | October 26, 2021 | 33 days |
| Gospel Day in Cook Islands | October 26, 2021 | 33 days |
| Ohi Day in Greece and Cyprus |
October 28, 2021 | 35 days |
| National Cat Day in United States | October 29, 2021 | 36 days |
| Republic Day in Turkey | October 29, 2021 | 36 days |
| Reformation Day in Slovenia | October 31, 2021 | 38 days |
| Halloween | October 31, 2021 | 38 days |
| World Vegan Day | November 1, 2021 | 39 days |
| All Saints' Day | November 1, 2021 | 39 days |
| Day of the Dead in Mexico | November 1, 2021 | 39 days |
| Independence Day in Antigua and Barbuda | November 1, 2021 | 39 days |
| Arrival of Indentured Labourers in Mauritius | November 2, 2021 | 40 days |