Right after sunset today is the beginning of the new Hebrew (and Jewish) year. As it is stated in Exodus 12:2
2 This month shall be unto you the beginning of months: it shall be the first month of the year to you.2 הַחֹ֧דֶשׁ הַזֶּ֛ה לָכֶ֖ם רֹ֣אשׁ חֳדָשִׁ֑ים רִאשׁ֥וֹן הוּא֙ לָכֶ֔ם לְחָדְשֵׁ֖י הַשָּׁנָֽה׃
This makes the 1st of Abib (which literally means "tender") is the first day of the New Year. This month is also a special month as this is the month of remembrance of the Exodus from Egypt (Exodus 34:18).
This day is also an astronomically significant event as it is always corresponds with Spring Equinox (+/- several days). And of'course, today is the day of the New Moon.
Also, as it is stated in Numbers 10:10, on the first day of each month the two Silver Trumpets were to be blown and today is no exception:
Not only this day is the beginning of the New Year, but it is also a reminder to the upcoming holiday of Passover, which is from this day 14 days apart. This post explains all of the holidays.
Thus, I would like to wish you a happy and prosperous New Year!