Holidays and Observances
Alphabetical Listing of O Holidays

Below, you can find a Holidays and Observances Alphabetical Listing of US Holidays and World Holidays and Observances that start with O.  We are still adding names to the list, so more information will be coming. 

After we complete the summary pages on the site, we will start working on a detailed page(s) for each Holidays and Observance. Once a page is completed for each Holiday or Observance, it will be linked up below, as well as it's related Daily Holidays page. (that should keep us busy for the next 20 years or so!!)

Search for Holidays Alphabetically:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, N-Pg2 O, P, Q, R, S, T, U, V, W, X-Y-Z

Organic Harvest Month is the Entire Month of September!

Organic Harvest Month is the Entire Month of September! I've been growing my own Organic Vegetables over the last couple of years. Not only does it save a lot of money, but there is nothing better than going outside to pick stuff for dinner! This was one day's haul - with this many tomatoes, I took off the skins and ran everything through my juicer.  I was then able to freeze the juice/pulp in freezer quart size bags which are perfect for taking out to make pasta sauce or any type of soup. For excess zucchini - I peeled them and just grated them and put in freezer baggies to add to soups and sauces.

O Holidays and Observances

  • O. Henry Pun-Off Day - May 11, 2019 (Third Saturday in May)
  • Oatmeal Monday - February 11, 2019 (Second Monday in February)
  • Oatmeal Month - Entire Month of January
  • Occupational Safety and Health Professionals Day - May 9
  • Occupational Safety & Health Day - May 8, 2019 (Wednesday of the First Full Week of May)
  • Occupational Therapy Month - Entire Month of April
  • Odd Day - (Last one was 9-11-13 - three consecutive odd numbers)
  • Official Lost & Found Day - December 13, 2019 (Second Friday in December)
  • Oklahoma City Bombing Commemoration Day - April 19
  • Okra Month - Entire Month of June
  • Oktoberfest - September 21, 2019 - October 6, 2019 Beer Festival in Munich, Germany. This festival is now held all over the World. Also, check out our Holidays in Germany page!
  • Old Clem's Night - November 23
  • Old Farmers Day - October 12
  • Old Time Fiddlers Week - June 16-22, 2019 (Third Week in June)
  • Older Americans Mental Health Week - May 19-25, 2019 
  • Older Americans Month - Entire Month of May
  • One Day Without Shoes Day - May 10, 2019
  • One-on-One Month - Entire Month of September
  • One Voice - July 26
  • Open that Bottle Night - February 23, 2019 (Last Saturday in February)
  • Operating Room Nurse Awareness Week - Third Week of November
  • Operating Room Nurse Day - November 14
  • Operation Red Wings Observance - June 28
  • Operation Santa Paws - Entire Month of December
  • Oral, Head and Neck Cancer Awareness Week - April 14-19, 2019
  • Orange Month - Entire Month of August
  • Organic Harvest Month - Entire Month of September
  • Organize Your Home Office Day - March 12, 2019 (Second Tuesday in March)
  • Organize Your Medical Information Month - Entire Month of October
  • Origami Day - November 11
  • Orthodox Easter - April 28, 2019 (movable date)
  • Orthodox Easter Monday - April 29, 2019 (movable date)
  • Orthodox Good Friday - April 26, 2019 (movable date)
  • Orthodox Holy Saturday - April 27, 2019 (movable date)
  • Orthodox Lent - March 11 - April 27, 2019
  • Ostasa - March 20, 2019 (Spring Equinox) 
  • Osteoporosis Prevention Month - Entire Month of May
  • Our Lady of Guadelupe - December 12

Search for Holidays Alphabetically:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, N-Pg2 O, P, Q, R, S, T, U, V, W, X-Y-Z

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