Sunbathing doesn't cause coronavirus.
They tested more people today than any other day ever, if they tested 10x as many a week ago then that would be the most positive.
Viruses exhibit er viral growth so they are expected to show more cases than the day before every day.
That said the testing doesn't tell us that much unless it's random (it's not), since if they are testing everyone in hospital and the number of people in hospital increases faster than testing then over time more and more of the test results will simply be the people in hospital, without necessarily a growth in infections.
Until their is random testing then none of the figures are that reliable. Deaths not great because they lag and daily deaths less reliable than ONS deaths which lag still further.
In any case it doesn't take two weeks from exposure to infection, so your link to Mothers day is ridiculously spurious since you have literally no knowledge about the characteristics of those being tested (e.g. in ICU which was be longer from infection than merely first dymptoms) and the mean lag between testing and publication in daily statistics, so the two week delay is arbitrary.
Apart from that, yes confirmation bias is fascinating.