I'm not good at remembering dates- and it is worse now I'm retired. Inclined to suddenly realise "Oh it's * birthday TODAY". 3 sons usually send cards but if they forget I understand. And sometimes it's nice to have one turn up a couple of days after the right date with flowers or chocolates.
Name a famous band you COULDN'T name all the members of?
Just discovered my home not on UK Land Registry

receive an Amazon voucher too. As Lemongrove says, men often leave the sending to their wives. On the other hand, our DiLs pride themselves on - er - training our sons in their own ways. This means that they leave the card sending and present buying (for us at any rate) to our sons. Hence the somewhat haphazard approach. 