What part of the country are you?-they do not like cold and a late frost will see them off.
A lot off seed packets are distributed in other countries so what might work in Southern Spain right now won't work in the North of Scotland
As a rough guide allow 4 weeks from sowing to planting-I live in Southampton and will be sowing in a couple of weeks
You might be alright-but you might need to sow again-starting early does not always pay off-sorry