Given the task definition and input, reply with output. In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

During this time , it has passed overhead once and underfoot once , so in many places the period of strongest tidal forcing is the above-mentioned , about 12 hours and 25 minutes .

During this time , it has passed overhead ( culmination ) once and underfoot once ( at an hour angle of 00:00 and 12:00 respectively ) , so in many places the period of strongest tidal forcing is the above-mentioned , about 12 hours and 25 minutes .