so it is Nidche more often than not. actually, Yom ha’Atzmaut is a Mukdom more often that it is a Nidche, because if it falls out on a Friday [as it will, 4 out of the next 5 years] it is brought forward to Thursday Iyyor 4th, & if it falls out on a Shabbos, it is brought forward to Thursday Iyyor 3rd.
Ironically, the Declaration of Independence was quickly moved up to a Friday afternoon of Iyyor 5th, to abrogate Chilul Shabbos, and not withstanding, when nowadays that date is a Friday as was in 1948, is brought forward to Iyyor 4th.
The reason is that the government is concerned This is a very naive To’us. The government is not 1 iota concerned about Chillul Shabbos. However:- the Rabbanut haRashi cares a lot about Kedushas haShabbos, and they are the ones who pushed for the change in timing of Yom haAtma’ut in a bid to abrogate Chillul Shabbos.