  We can see profile information such as name, description and location in
order to know the user on social media. However, this profile information is
not always fixed. If there is a change in the user's life, the profile
information will be changed. In this study, we focus on user's profile
information changes and analyze the timing and reasons for these changes on
Twitter. The results indicate that the peak of profile information change
occurs in April among Japanese users, but there was no such trend observed for
English users throughout the year. Our analysis also shows that English users
most frequently change their names on their birthdays, while Japanese users
change their names as their Twitter engagement and activities decrease over
time.
