No it’s not “the theories and the traditions of men.” It’s measurement. Which the Bible demands that we conduct and interpret honestly and accurately. And as I’ve said already, you can’t fob that off by quibbling about the context, for the simple reason that to do so is to demand the right to tell lies. Nor can you fob it off with hand-waving about “same evidence, different interpretations,” as your different interpretations must be accurate and honest too.
So I put it to you again. Are you or are you not able to defend the YEC approach to measurement of such things as geological time as being accurate and honest, as the Bible demands?
You’re forgetting one important thing here. Genesis 1 talks about events on a cosmic scale. Once you leave the Earth’s atmosphere, the concept of what constitutes a day and a night no longer applies in these terms. A day on Mars is not the same as a day on Earth or a day on Venus. Even on Earth, evening, morning and 24 hour days do not apply at the North Pole or the South Pole. And then you have time zones thrown into the mix. In order to account for time zones in the LSDYEC model, with evening and morning delineating when one day ended and the next day started, you have to propose that there was a place on Earth (presumably in the Pacific) where Day Three started at exactly the same time as Day Two was starting just one metre to the west.
Treating the days of creation as literal 24 hour days rather than as figurative and phenomenological language requires you to abandon much more than the well-established geological fact that the Earth is 4.5 billion years old. It also requires you to abandon basic geometry.