You'll find the numerology meaning of the numbers at these links:

• The number 7
• The number 19
• The number 719

It's common for people to have a special attraction to the numbers of their birth date and to recognize them when they occur in their environment. The clock is the most common place where the birth date numbers are recognized because the month and day can both be represented in one clock time — 7:19 in your case.

So when the time matches a person's birth date, it's often noticed and remembered. Other times the person sees are less often remembered. The times that are remembered the most feel like they're seen the most, even though other times may be seen just as often but not remembered.

Now, when a person starts to wonder if there's a special meaning to seeing that particular time so often, at that point a mystery is created in the mind. Influenced by the mystery, the subconscious tries to direct the conscious attention to that particular clock time whenever it's available to see. That time is then seen much more often than other specific times.

See Why People See Certain Numbers All the Time for an article that explains how it works that wondering about a number makes a person see the number more often.