It was most noticeable for me in 1996 when I went to Australia for just under a fortnight. I left in early March, so it was still getting dark around 17:00, and of course when I arrived in Sydney it was autumn rather than spring, so the nights were drawing in (not as noticeably as in the UK as it's closer to the equator than we are), and their clocks went back. But still, by the end of my stay it was getting dark before 18:00 so it didn't feel that different from the UK.
Then I returned home, so now late March, and one day was wandering through Bristol wondering why the shops were closed, as it was broad daylight. Then I realised it was 19:30. The clocks going forward plus the extra hour and a bit daylight was very noticeable then! It's a sine wave, with the change being barely noticeable at the solstices, and fastest at the equinoxes - so actually the biggest increase in light will be during March, especially around the 21st.