Because I don't see any instance of the number 11 in your entire numerology profile, I suspect the extra conscious attention you are paying to the number itself may be stimulating your subconscious to draw your attention to it. More attention brings more recognition.

It is 11 minutes after the hour 24 times every day. Probably 16 or more times during waking hours. That is a lot of opportunity to notice that specific time.

Noticing your birth date (without the year) on the clock at least once a day may because you are sensitizing yourself to the occurrence of meaningful numbers. Like a little alarm clock, the subconscious or whatever it is that draws your attention, directs your focus to the occurrence at those specific times.