The historic information is summarized pretty well on Astro.com, mostly quoted from Nick Campion (though I'm going to end up disagreeing with their 4 PMN conclusion). The relevant part is:
So, at most, we have between 4:00 and 4:32 PM. One could theoretically pick the beginning moment and ending moment (declaration) for good reasons. However, in the 1960s in Spica, Alexander Marr gave his rectification of 4:15 PM. Starkman says he lived in Israel for many years and tested this against many events, and it had his full endorsement. It's the chart for Israel I've kept in my files since the '70s.In the atmosphere of crisis, and an invasion by the Arab Legion at dawn on 12 May, the Jewish leaders arranged a meeting to proclaim independence at 4.00 pm on 14 May in the Tel Aviv museum... The meeting began precisely at 4.00 pm, as arranged, when Ben-Gurion, the first prime minister, struck the table with his gavel. The audience then rose spontaneously and burst into the Hatikva, the anthem of the Zionist movement. It is clear that Ben-Gurion himself regarded 4.00 pm as the critical time...Ben-Gurion finished reading the independence statement and manifesto at 4.24 pm. The scroll of independence was then signed by the 24 members of the National Committee who were present and the meeting concluded at 4.32 pm when Ben-Gurion spoke the words 'Israel has been born!'.
But I hadn't pulled it out and checked it against the Hamas attack on Israel October 7, 2023, approximately 6:30 AM EEDT. A year ago we might not have detected that this was going to be one of the most gigantic events in Israel's history, but it clearly has become that by now. Starting with the longer-range techniques that also mark the biggest landmarks across the life of a chart, we find the following:
Solar arcs:
4°29' Lib - d Saturn
4°36' Can - r MC [+7']
16°34' Vir - r Neptune
16°41' Vir - d MC [+7']
Note that this combination immediately tells us that the natus has MC = Sa/Ne 0°07', which is correct. If made exact, this would roll the time back about 28 seconds - less than half a minute.
Secondary progressions:
Nothing gigantic. Progressed Moon on natal WP-a (in longitude; I haven't checked it in RA). Progressed Saturn has squared natal Sun for many years and was within 12' at the time. p Venus opposed r Jupiter 9', which is entirely wrong. Quotidian Asc crossed natal Uranus for the day.
Transits:
2°13' Lib - r Asc [-37']
2°50' Cap - t Pluto
Other transits that do not reflect on the time but are important include t Jupiter sq r Pluto (10'), t Neptune sq r Uranus (23'), t Venus sq r Mars (57'), and t angles crossing natal Neptune at the moment of the attack.
The two main solar arcs and Pluto's transit across the Ascendant surely confirm the accuracy of this chart - at worst - to within three minutes, and perhaps to the exact minute.