Don't delay, get those DANDELIONS out of your lawn,
NOW!!!
You wouldn't like them to go to seed, would you?
Pop a bit of soil into the holes you've made in the lawn and the grass will invade over a couple of weeks.
Rake off as much MOSS as you can - go on, work that body, you'll be all hot and sweaty!
This is way better than using chemicals, both for you, your garden and the planet.
And you'll have a nice lawn too.