These towers form an ancient solar calendar.

这些古塔组成了一个太阳历。

So, yes, the date of a new moon in 45 B.C. decided when Januarary first would appear on the solar calendar.

因，前45年新月出现的日期决了1月1日在阳历上的出现时间。

January 1 is New Year's Day on the solar calendar.

1月1日是阳历的新年。

Then came Julius Caesar who decided to follow the solar calendar of the Egyptians that had Januaries and Februaries in the beginning.

后来，凯撒大帝决埃及人的阳历，这个历法一开始就有1月和2月。

Caesar had spent a lot of time in Egypt, where 365-day calendars were all the rage, so in 46 BC, he flushed Rome’s lunar calendar down the aqueduct and installed a solar calendar.

Caesar曾在埃及待了一段很长的时间，而在那时的埃及盛行365天为一年的历法，所以，在前46年，他废除了罗马的阴历，改用了阳历。

Caesar had spent a lot of time in Egypt, where 365-day calendars were all the rage, so in 46 BC, he flushed Rome's lunar calendar down the aqueduct and installed a solar calendar.

凯撒在埃及待了很久，那里 365 天的日历风靡一时，所以在前 46 年，他摒弃了罗马的阴历，并引入了太阳历。