This is a list of selected September 28 anniversaries that appear in the "On this day" section of the
Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the
selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the
talk page instead.
Please note that the events listed on the Main Page are chosen based more on relative
article quality and to maintain a mix of topics, not based solely on
how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled
featured article or
picture of the day.
To report an error when this appears on the Main Page, see
Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.
1928 – Scottish biologist and pharmacologist
Alexander Fleming discovered penicillin when he noticed a bacteria-killing
mould growing in his laboratory.
2009 – A protest held by 50,000 people in
Conakry, Guinea, was forcefully disrupted by the military junta, resulting in at least 157 deaths and over 1,200 injuries.