#USOpen2021 on X: trending history
#USOpen2021 has trended in 15 locations since 4 September 2021. It was last on a list 13 September 2021.
First seen
4 Sep 2021
Last seen
13 Sep 2021
Locations
15
Best rank
–
Biggest days
| 4 Sep 2021 | 6 locations | |
| 10 Sep 2021 | 1 location | |
| 12 Sep 2021 | 7 locations | |
| 13 Sep 2021 | 3 locations |
Every time it trended
List updates per year, all locations.
2021
18 updates, 4 days
Post volume on its busiest days
Highest volume recorded with the trend; 2 days have a figure.
- 12 September 202134,900 posts
- 13 September 202114,745 posts
From twtData's records of X trends in 450+ locations: the biggest countries every hour, the rest once a day. An "update" is one snapshot that listed this topic. Rank and hours on the lists count from November 2025, when our snapshots started keeping X's order; earlier days count only for locations and dates. Counted across 2 spellings.