Some people are only just realising the true meaning of the letters AM and PM - and experts have pointed out it may mean they technically aren't telling the time correctly.
While it may have once been something that everyone learned in school, with devices like our phones and laptops using the 24-hour clock the use of AM and PM has become less frequent - so much so, it seems, that many aren't even aware of what the letters stand for. When TikTok user @amayaclarke08 posed the question of what the letters mean, people were left stumped.
Several social media users took to the comments section to guess 'after midnight' and 'past midday', while others were certain the letter M stood for 'morning'. But most failed to name the correct answer - but they can perhaps be forgiven, given that the letters actually stand for Latin phrases.