Change the following into $12$ hour format:

$21:10$ $\mathrm{hours}$

Change the following into $12$ hour format:

$11:20$ $\mathrm{hours}$

Change the following time in $12$-hour clock format of $\mathrm{HH}:\mathrm{MM}$ without putting time unit in the box.

$00: 00$$\mathrm{hours}$

Change the following into $24$ hour format

$3.15 \mathrm{a}.\mathrm{m}.$

Change the following into $24$ hour format

$12.35 \mathrm{p}.\mathrm{m}.$

Change the following into $24$ hour format

$12.00$ noon

Change the following into $24$ hour format.

$12.00$midnight.

If the duration of time from $5.30 \mathrm{a}.\mathrm{m}$ to $12.40 \mathrm{p}.\mathrm{m}$ is $k$ hours $l$ minutes, then find the value of $k+l$.

Calculate the duration of time. (Write the answer in $\mathrm{x} \text{hours} \mathrm{y} \text{minutes}$ format)

From $1.30 \mathrm{p}.\mathrm{m}$ to $10.25 \mathrm{p}.\mathrm{m}$