Colorado Day is an annual observance that commemorates the state’s birthday on August 1, 1876, and its history. In the table below, you will find when Colorado Day is official marked and celebrated in United States over a span of 15 years. All the information display below is also available via our API as well as downloadable as a csv. Signup here to get started.

Our API allows you to specify the State and Region as part of the API requests, thereby limiting the requests to a particular state or city. View the API documentation for a full description of the supported countries, states and regions.

Year Day of the Week Date Name
2010
Sunday August 1 Colorado Day
2011
Monday August 1 Colorado Day
2012
Wednesday August 1 Colorado Day
2013
Thursday August 1 Colorado Day
2014
Friday August 1 Colorado Day
2015
Saturday August 1 Colorado Day
2016
Monday August 1 Colorado Day
2017
Tuesday August 1 Colorado Day
2018
Wednesday August 1 Colorado Day
2019
Thursday August 1 Colorado Day
2020
Saturday August 1 Colorado Day
2021
Sunday August 1 Colorado Day
2022
Monday August 1 Colorado Day
2023
Tuesday August 1 Colorado Day
2024
Thursday August 1 Colorado Day
2025
Friday August 1 Colorado Day

These dates may be modified as official changes are announced, so please check back regularly for updates or sign up for our newsletter to receive regular updates. All updates are automatically added to our API as well.

Our team of holiday editors are continuously monitoring for changes from government agencies and local authorities to this data to ensure we're providing the most accurate information possible. If you happen to notice an error, please get in touch.