19. (3 points) At Dongfanghong Primary School, the flag-raising time in 2012 varies by date, with the following rules: from January 1 to January 10, it is fixed at 7:13 AM; from January 11 to June 6, it gradually advances from 7:13 AM to 4:46 AM, with each day advancing by 1 minute; from June 7 to June 21, it is fixed at 4:46 AM. What is the flag-raising time at Dongfanghong Primary School today (March 11)? $\qquad$ hours $\qquad$ minutes.
【Analysis】First, determine whether 2012 is a leap year or a common year, then find out the number of days in February, and calculate the total number of days from January 11 to March 11. This will help us find out how many minutes earlier it is compared to January 11, and we can then calculate backward from 7:13.

【Solution】Solution: $2012 \div 4=503$;
2012 is a leap year, so February has 29 days; January has 31 days,
From January 11 to March 11, there are:
$$
29+31=60 \text { (days); }
$$
$60 \times 1=60$ (minutes);
60 minutes $=1$ hour;
Calculating backward 1 hour from 7:13 is 6:13.
Answer: The flag-raising time at Dongfanghong Primary School on March 11 is 6:13.
The answer is: 6,13.