This is what I found on the net:
Every dog has his day. In Latin, "Hodie mihi, cras tibi." "Nunc mihi, nunc tibi, benigna" [fortuna]. In German, "Heute Mir, Morgen Dir." You may crow over me to-day, but my turn will come by-and-by. The Latin proverb, "Hodie mihi," etc., means, "I died to-day, your turn will come in time." The other Latin proverb means, fortune visits every man once. She favours me now, but she will favour you in your turn.
It is from this site, www.infoplease.com
Every dog has his day. In Latin, "Hodie mihi, cras tibi." "Nunc mihi, nunc tibi, benigna" [fortuna]. In German, "Heute Mir, Morgen Dir." You may crow over me to-day, but my turn will come by-and-by. The Latin proverb, "Hodie mihi," etc., means, "I died to-day, your turn will come in time." The other Latin proverb means, fortune visits every man once. She favours me now, but she will favour you in your turn.
It is from this site, www.infoplease.com