The user’s phrase appears to be French and relates to the time change: “on avance où on recule d'une heure” which translates to asking whether we advance (move forward) or go back by one hour. Direct answer:
- In the autumn, clocks go back one hour. In many places that observe daylight saving time, the period called “heure d’hiver” begins when we set the clocks back by one hour.
- Specifically: at the end of October, typically overnight, we subtract one hour, resulting in earlier sunsets and longer evenings.
- In the spring, clocks are moved forward by one hour (advanced) to switch to daylight saving time (“avancer d’une heure”).
Simple mnemonics:
- Autumn: Fall back — reculer d’une heure.
- Spring: Spring forward — avancer d’une heure.
If you’re asking about a particular country or year, I can confirm the exact date and the local practice.
