Please don't change the format of dates, as you did to Toshinobu Kubota. As a general rule, if an article has evolved using predominantly one format, the dates should be left in the format they were originally written in, unless there are reasons for changing it based on strong national ties to the topic. Please also note that Wikipedia does not use ordinal suffixes (e.g., st, nd, th), articles, or leading zeros on dates.

For more information about how dates should be written on Wikipedia, please see this article.

If you have any questions about this, ask me on my talk page, or place {{helpme}} on your talk page and someone will show up shortly to answer your questions. Enjoy your time on Wikipedia. Thank you.