At 12:00 noon on March 25, two ships A and B set off from two ports A and B at the same time and headed towards each other. At 12:00 noon every day during the voyage, the two ships will release a carrier pigeon to report to Port B at the same speed. It is known that the carrier pigeon "Adumb" released by Ship A on March 31 and the carrier pigeon "Agua" released by Ship B on April 1 arrived at Port B at the same time. At 12 noon on April 7th, ship B arrived at port A. At this time, ship B released its last carrier pigeon in the entire voyage, and the carrier pigeon arrived at port A at the same time as ship A. It is known that in addition to "dumb" and "Agua", there is another pair of pigeons that also arrived at port B at the same time, and the exact time of arrival of the pair of pigeons at port B is requested.
3月25日正午12点，甲、乙两艘轮船分别从A、B两港同时出发，相向而行．航行中的每天正午12点，这两艘轮船都会放出一只信鸽，以相同的速度飞向B港报信．已知甲船3月31日放出的信鸽"阿呆"与乙船4月1日放出的信鸽"阿瓜"同时到达B港．4月7日正午12点，乙船到达了A港，此时乙船放出了它在整个航程中的最后一只信鸽，而该信鸽恰好与甲船同时到达曰港．已知除了"阿呆"与"阿瓜"之外，还有一对信鸽也是同时到达B港，请求出这对信鸽到达日港的准确时间．
<gadget id="calculator">3 * 13</gadget>
<output>39</output>

<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<gadget id="calculator">39 - 30</gadget>
<output>9</output>

<gadget id="calculator">9 / 6</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) + 15</gadget>
<output>33/2 = around 16.5</output>

<result>33/2 = around 16.5</result>