Turn the tide and Zero hour

Turn the tide verb - Cause a complete reversal of the circumstances.

Zero hour and turn the tide are semantically related. in critical juncture topic. In some cases you can use "Zero hour" instead a noun phrase "Turn the tide".

Zero hour noun - A time or state of affairs requiring prompt or decisive action.

Turn the tide and zero hour are semantically related. Sometimes you can replace phrase "Turn the tide" with "Zero hour", this phrases are similar.