Birthdays, Relocations and new moon charts

1
I've heard it said that by being in a different location on your birthday, you can cast a chart based on the location. How long do the effects last? Surely not as a natal chart. The effects are intensified if it happens conjunct a new moon or eclipse, or so I've been led to belive.

Due to an evacuation my sister celebrated her birthday at an entirely different location not of her choosing. Different state entirely, from the day before her birthday until the day after.

The chart did not seem to promising which is why I ask for time effects. One year, well one carries on, one decade more problematic. Any ideas?

2
Moonwise, what you are refering to is Solar Returns, you may want to read up on this.

And if one were very wealthy, and devotedly an advocate of astrology, they may travel thousands of miles from their residence to launch an electional event as the house cusps would change better for their pursuit.