Early daffodil


I planted a hawthorn hedge in my front garden last Spring, and, last Autumn, I planted daffodil bulbs at the base of the hawthorn saplings. I’m not sure why, but the daffodils have started to sprout (and flower) early. One particular daffodil began flowering in mid-December(below) and is still in bloom, 3 weeks later (above). For how long do daffodil flowers last ?