Today’s idiom is The Tide has Turned!
The tide has turned or the turning of the tide means that something that was relatively constant has now changed.
The phrase comes from when the sea tide changes from high tide to low tide or vice versa – this is called the turning of the tide or when the tide turns. Its origin as an idiom is thought to have come from William Shakespeare’s Henry V (www.phrases.org.uk):
Hostess: Nay, sure, he’s not in hell: he’s in Arthur’s bosom, if ever man went to Arthur’s bosom. A’ made a finer end and went away an it had been any christom child; a’ parted even just between twelve and one, even at the turning o’ the tide: for after I saw him fumble with the sheets and play with flowers and smile upon his fingers’ ends, I knew there was but one way; for his nose was as sharp as a pen, and a’ babbled of green fields.
Some examples of its use are as follows:
• The home team were losing the game but after half time the tide turned and the scored the winning goal.
• The colour pink was very popular in fashion last season but how quickly the tide has turned, this season everybody is wearing purple!