These are some celebrations that happen only once a year:
- Christmas day
- New Years day
- Birthdays
- Independence day
- Easters
- Valentines day
Annual celebratory events
I was not able to find the complete question to give a proper answer, however, the celebrations mentioned before are annual celebratory events, they happen once a year, and they are also international celebrations, they happen in almost every country (except for Independence day, which is also a different date in every country that has an Independence to celebrate).
Check more information about annual celebratory events here https://brainly.com/question/6956394
