In order to compute the official French time from this, it is necessary to: add or subtract the deviation given by the equation of time. add half a second to have the mean Paris time. add 50 minutes 39 seconds to obtain Central European Time. add one hour in summer to take into account daylight saving time.
為了得到法國的官方時間，下面的計算是必須的： 加上或減去均時差所給的時間偏差， 添加與巴黎平時的半秒鐘差異， 加上50分39秒，得到歐洲中部時間，. 在夏天，再添加一小時以顧及日光節約時間。