3 Answers

It depens on the time of year. See chart here>>https://www.timeanddate.com/sun/belgium/antwerp

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The actual flow of time is changing and by measuring that we can get closer to answering the bigger questions. Gravity has an effect on time and there are even larger oscillations happening in spacetime. Tiny changes and shifts happen in time link and we link don't necessarily link have an answer as to why.