There are 3 Hebrew months that begin with T:
Tishrei (תשרי) [sometimes spelled Tishri]
Tevet (טבת)
Tammuz (תמוז)
April is the first month of the ancient Hebrew calendar, and for good reason. The Gregorian calendar has the beginning of the year in January just as winter is beginning to get to it's coldest two month. Ancient hebrews put the beginning of the year in spring wich is the first station of the year wich is a more logical calendar. December in ancient Hebrew calendar would be the ninth month.
In the Hebrew calendar, the month of Av is followed by the month of Elul.
On the fifteenth day of the Hebrew month of Tishrei, which occurs in September or October.
The Hebrew month Adar is the same in all countries. It is a Spring month.
It depends on what the current Hebrew month is. In general, each new month begins on a new moon.
If you are asking what "twelfth month" is in Hebrew, it's hakhodesh hashnem-asar.
beginning = haht-khah-LAH
In the Hebrew calendar, the month of Nissan immediately precedes Iyar.
A Hebrew month can be 28, 29 or 30 days, so there are at least 4 weeks in a Hebrew month.
April is not a month in the Hebrew calendar, and the Sundays in any Hebrew month could easily change from year to year, just as they often do for any month in the civil calendar.
There isn't a Hebrew name with this meaning.
Shevat. It doesn't correspond to February exactly, but it is the Hebrew month that (on average) has the greatest overlap with February.See also:How the Hebrew calendar works