When is 404 Day 2025
404 Day 2025
Friday, April 04, 2025
When is 404 Day 2026
404 Day 2026
Saturday, April 04, 2026
Why we celebrate 404 Day?
404 Day is a holiday associated with the World Wide Web. Some say it’s unofficial Webmaster’s Day, some say it’s International Internet Day. In the U.S., it is about raising awareness about proper filtering of information from the web. Either way, the event is directly related to the World Wide Web.
The history of the holiday is unknown, but its date was not chosen by chance: 4.04 is reminiscent of a 404 error. This is the standard HTTP response code for a “dead” link. This error is considered the most common on the Internet, so it is known to many of its active users.
What Do People Do?
Internet users remember this holiday, on the expanses of which they actively share funny pictures about this type of error or tell about the problems in which it occurred.
Nevertheless, it is no coincidence that several holidays are combined under the date at once: the webmaster works to create sites that are then posted on the Internet. Links to various resources can contain both useful information and content that sometimes needs to be censored. But don’t be overzealous about restricting information. It’s important to keep track of which links should be blocked and which should be left available. Sometimes sites with useful content are blocked while malicious ones remain open. This is a common problem with many school resources.
How to Celebrate 404 Day?
404 Day is not a day off; there are no special events on this holiday. This event should be celebrated in the evening at the computer. You can browse interesting sites, order a T-shirt with a 404 print. It is also worth reading about online professions or even take a course in one of them to master a sought-after specialty.
Interesting facts about the Internet
- The global network has a patron saint – Saint Isidore of Seville.
- About 5 billion people are active users of the Internet.
- On average, each of them spends about 7 hours a day online.
- With the advent of smartphones, the vast majority of Internet surfers began to use them to get online.
- The most popular language of requests and websites is English.
404 Day Observances
List of dates for other years
| Weekday | Date | Year | Name |
|---|---|---|---|
| Monday | 04 April | 2022 | 404 Day |
| Tuesday | 04 April | 2023 | 404 Day |
| Thursday | 04 April | 2024 | 404 Day |
| Friday | 04 April | 2025 | 404 Day |
| Saturday | 04 April | 2026 | 404 Day |
| Sunday | 04 April | 2027 | 404 Day |
| Tuesday | 04 April | 2028 | 404 Day |
| Wednesday | 04 April | 2029 | 404 Day |
| Thursday | 04 April | 2030 | 404 Day |
| Friday | 04 April | 2031 | 404 Day |
| Sunday | 04 April | 2032 | 404 Day |
| Monday | 04 April | 2033 | 404 Day |
| Tuesday | 04 April | 2034 | 404 Day |
| Wednesday | 04 April | 2035 | 404 Day |
404 Day Video
404 Day Cards
List of Common Holidays in 2025
| Date | Holiday | Type |
|---|---|---|
| January 2025 | ||
| Jan 1 - Tues | New Year's Day 2025 | National holiday |
| Jan 6 - Sun | Epiphany 2025 | Christian |
| Jan 7 - Mon | Orthodox Christmas Day 2025 | Orthodox Christian |
| Jan 14 - Mon | Orthodox New Year 2025 | Orthodox Christian |
| Jan 15 - Tues | Makar Sankranti 2025 | Hindu |
| Jan 21 - Mon | Tu B'Shevat 2025 | Jewish |
| Jan 21 - Mon | Martin Luther King Day 2025 | National holiday |
| February 2025 | ||
| Feb 1 - Fri | National Freedom Day 2025 | Observance |
| Feb 1 - Fri | National Wear Red Day 2025 | Observance |
| Feb 2 - Sat | Groundhog Day 2025 | Observance |
| Feb 5 - Tues | Chinese New Year 2025 | Observance |
| Feb 12 - Tues | Lincoln's Birthday 2025 | Observance |
| Feb 14 - Thurs | Valentine's Day 2025 | Observance |
| Feb 18 - Mon | Presidents' Day - Washington's Birthday 2025 | National holiday |
| March 2025 | ||
| Mar 1 - Fri | Read Across America Day 2025 | Observance |
| Mar 1 - Fri | Employee Appreciation Day 2025 | Observance |
| Mar 5 - Tues | Maha Shivaratri 2025 | Hindu |
| Mar 5 - Tues | Mardi Gras 2025 | Christian |
| Mar 6 - Wed | Lent 2019 | Christian |
| Mar 6 - Wed | Ash Wednesday 2025 | Christian |
| Mar 10 - Sun | Daylight Saving Time - begins 2025 | Daylight Saving |
| Mar 17 - Sun | St. Patrick's Day 2025 | Observance |
| Mar 20 - Wed | Spring/Fall - March equinox 2025 | Season |
| Mar 21 - Thur | Purim 2025 | Jewish |
| Mar 21 - Thurs | Holi 2025 | Hindu |
| April 2025 | ||
| Apr 1 - Mon | April Fools' Day 2025 | Observance |
| Apr 3 - Wed | Isra and Mi'raj 2025 | Muslim |
| Apr 13 - Sat | Thomas Jefferson Birthday 2025 | Observance |
| Apr 14 - Sun | Rama Navami 2025 | Hindu |
| Apr 14 -Sun | Palm Sunday 2025 | Christian |
| Apr 15 - Mon | Tax Day 2025 | Observance |
| Apr 16 - Tues | National Library Workers Day 2025 | Observance |
| Apr 18 - Thurs | Maundy Thursday 2025 | Christian |
| Apr 19 - Fri | Good Friday 2025 | Christian |
| Apr 20 - Sat | Holy Saturday 2025 | Christian |
| Apr 20 - Sat | Passover - Starts 2025 | Jewish |
| Apr 21 - Sun | Laylat al Bara'at 2025 | Muslim |
| Apr 21 - Sun | Easter 2025 | Christian |
| Apr 21 - Sun | Earth Day 2025 | Observance |
| Apr 22 - Mon | Easter Monday 2025 | Christian |
| Apr 24 - Wed | Administrative Professionals Day 2025 | Observance |
| Apr 25 - Thurs | Take our Daughters and Sons to Work Day 2025 | Observance |
| Apr 26 - Fri | Orthodox Good Friday 2025 | Orthodox Christian |
| Apr 26 - Fri | Arbor Day 2025 | Observance |
| Apr 27 - Sat | Passover - Final Day 2025 | Jewish |
| Apr 28 - Sun | Orthodox Easter 2025 | Orthodox Christian |
| May 2025 | ||
| May 1 - Wed | May Day 2025 | Observance |
| May 2 - Thur | Yom Hashoah 2025 | Jewish |
| May 2 - Thurs | National Day of Prayer 2025 | Observance |
| May 5 - Sun | Cinco de Mayo 2025 | Observance |
| May 6 - Mon | National Nurses Day 2025 | Observance |
| May 6 - Mon | Ramadan starts 2025 | Muslim |
| May 12 - Sun | Mothers' Day 2025 | Observance |
| May 15 - Wed | Peace Officers Memorial Day 2025 | Observance |
| May 18 - Sat | Armed Forces Day 2025 | Observance |
| May 22 - Wed | National Maritime Day 2025 | Observance |
| May 23 - Thurs | Lag BaOmer 2025 | Jewish |
| May 27 - Mon | Memorial Day 2025 | National holiday |
| May 30 - Thurs | Ascension Day 2025 | Christian |
| Jun 1 - Sat | Laylat al Qadr 2025 | Muslim |
| June 2025 | ||
| Jun 1 - Sat | Laylat al Qadr 2025 | Muslim |
| Jun 5 - Wed | Eid al-Fitr 2025 | Muslim |
| Jun 6 - Thurs | D-Day 2025 | Observance |
| Jun 9 - Sun | Shavuot 2025 | Jewish |
| Jun 9 - Sun | Pentecost 2025 | Christian |
| Jun 10 - Mon | Whit Monday 2025 | Christian |
| Jun 14 - Fri | Flag Day 2025 | Observance |
| Jun 16 - Sun | Fathers' Day 2025 | Observance |
| Jun 20 - Thurs | Corpus Christi 2025 | Christian |
| Jun 21 - Fri | Summer/Winter Solstice 2025 | Season |
| July 2025 | ||
| Jul 4 - Thurs | Rath Yatra 2025 | Hindu |
| Jul 4 - Thurs | 4th of July - Independence Day 2025 | National holiday |
| Jul 28 - Sun | Parents Day 2025 | Observance |
| August 2025 | ||
| Aug 4 - Sun | Friendship Day 2025 | Observance |
| Aug 11 - Sun | Day of Arafat 2025 | Muslim |
| Aug 11 - Sun | Tisha B'Av 2025 | Jewish |
| Aug 11 - Sun | Eid al-Adha 2025 | Muslim |
| Aug 14 - Wed | Raksha Bandhan 2025 | Hindu |
| Aug 15 - Thurs | Assumption of Mary 2025 | Christian |
| Aug 19 - Mon | National Aviation Day 2025 | Observance |
| Aug 21 - Wed | Senior Citizens Day 2025 | Observance |
| Aug 23 - Fri | Krishna Janmashtami 2025 | Hindu |
| Aug 26 - Mon | Women's Equality Day 2025 | Observance |
| Aug 31 - Sat | Muharram 2025 | Muslim |
| September 2025 | ||
| Sept 2 - Mon | Ganesh Chaturthi 2025 | Hindu |
| Sep 2 - Mon | Labor Day 2025 | National holiday |
| Sep 8 - Sun | National Grandparents Day 2025 | Observance |
| Sep 10 - Tues | Ashura 2025 | Muslim |
| Sep 11 - Wed | Patriot Day 2025 | Observance |
| Sep 17 - Tues | Constitution Citizenship Day 2025 | Observance |
| Sep 23 - Mon | Fall/ Spring - September equinox 2025 | Season |
| Sept 29 - Sun | Navratri 2025 | Hindu |
| Sept 30 - Mon | Rosh Hashana 2025 | Jewish |
| October 2025 | ||
| Oct 7 - Mon | Child Health Day 2025 | Observance |
| Oct 7 - Mon | Dussehra 2025 | Hindu |
| Oct 9 - Wed | Leif Erikson 2025 | Observance |
| Oct 9 - Wed | Yom Kippur 2025 | Jewish |
| Oct 14 - Mon | Sukkot 2025 | Jewish |
| Oct 14 - Mon | Columbus Day 2025 | National holiday |
| Oct 16 - Wed | Boss's Day 2025 | Observance |
| Oct 21 - Mon | Shemini Atzeret 2025 | Jewish |
| Oct 22 - Tues | Simchat Torah 2025 | Jewish |
| Oct 27 - Sun | Diwali 2025 | Hindu |
| Oct 31 - Thurs | Halloween 2025 | Observance |
| November 2025 | ||
| Nov 1 - Fri | All Saints' Day 2025 | Christian |
| Nov 2 - Fri | All Souls Day 2025 | Christian |
| Nov 3 - Sun | Daylight Saving Time - ends 2025 | Daylight Saving |
| Nov 10 - Sun | The Prophet's Birthday 2025 | Muslim |
| Nov 11 - Mon | Veterans Day 2025 | National holiday |
| Nov 28 - Thurs | Thanksgiving Day 2025 | National holiday |
| Nov 29 - Fri | Black Friday 2025 | Observance |
| December 2025 | ||
| Dec 2 - Mon | Cyber Monday 2025 | Observance |
| Dec 1 - Sun | Advent 2025 | Christian |
| Dec 6 - Fri | St Nicholas Day 2025 | Christian |
| Dec 7 - Sat | Pearl Harbor Remebrance Day 2025 | Observance |
| Dec 17 - Tues | Wright Brothers Day 2025 | Observance |
| Dec 22 - Sun | Winter/Summer Solstice 2025 | Season |
| Dec 23 - Mon | Hanukkah/Chanukah - Starts 2025 | Jewish |
| Dec 24 - Tues | Christmas Eve 2025 | Christian |
| Dec 25 - Wed | Christmas Day 2025 | National holiday |
| Dec 26 - Thurs | Kwanzaa -thru Jan 1 2025 | Observance |
| Dec 30 - Mon | Hanukkah/Chanukah - Final Day 2025 | Jewish |
| Dec 31 - Tues | New Years Eve 2025 | Observance |
