Another 1st Sight.

       Even if they, have been up a few days.  I think last time the stood centre-stage was when I did three shots as they closed for the night, as many flowers seem to do.  
      BUT not all do -  then there "Scarlet Pimpernel", Mam used to tell us they closed at 14:00, ot, as it was more commonly known 2 p.m.
      Yet again - youhave to check:-
"Anagallis arvensis (Syn. Lysimachia arvensis), commonly known as the scarlet pimpernel, red pimpernel, red chickweed, poor man's barometer, poor man's weather-glass, shepherd's weather glass or shepherd's clock, is a species of low-growing annual plant with brightly coloured flowers, most often scarlet but also bright blue and sometimes pink."  
HOWEVER - as Jerra and I discovered, in June 2021 there's also a yellow variety.