How do you remind someone its your birthday with out telling them? Today is my birthday and I know we all forget birthdays so how do I remind them indirectly?
You could set your birth date in a social media, because they usually remind people about others' birthday.
Another way, if you're talking to the person, you could mention you are doing something just because it is your birthday, for example:
"I took the day for relaxing today. At least on my birthday I think I deserve it."
You get the point, right? Try tweaking it, so it doesn't sound 'needy', if that's not what you want.
Also, if you're planning to throw a party, you could always invite people you would like to remember your birthday.
You didn't say where you want the remembering to happen. Is is at work? Take cake and write a sign.
At sport or in the pub? Buy a round of drinks.
On social media? Do you care? Well, as Leonardo suggested, enter your birthday in your favourite tool and it will do the job for you.
But remember, if you expect people to remember and mark your birthday, you have to do the same for them.
Invite them to your birthday party of course!