British national wish to apply irish citzenship

[Corw]

Hi everyone
I am British national I came to Ireland July 2018 and start working October 2018 ,
I wish to apply Irish citizenship this year probably July 2023 .
can anyone confirm that when my reckonable residence period will be start ?
The day I entered in ireland or the the day I started work in ireland ?
And also in order to complete 150 points for citizenship how many years of my registration
record from RTB should I request ?
Thanks

[littlerr]

The day you entered Ireland.
If you want to use RTB record as part of your 150 points for each of the five years, you should provide five years of proofs.