Euphoric inscription in book after Israeli Declaration of Independence

In a copy of the Hebrew translation of the Jewish German Actor Alexander Granach's Autobiography, I found an inscription from a father to his children signed off
Hadera, Yom Rishon, Tishre 5749, year one to our freedom 14.10.48
חדרה. יום ראשון. תשרי תש"ט. א לחרותינו 14.10.48