Calculation of taxable state pension in first year of entitlement

Hi - 2023/24 was the first year in which I was entitled to state pension, but I can't find any reference as to exactly how the taxable amount is calculated - the DWP figure seems to be based on full weeks, but the amount I actually received was pro-rated from my birthday (Sun 24 Dec) to the standard Wednesday payment date and then 4-weekly from then on. And DWP told me on the phone that the taxable amount is calculated NOT to 5 April, but to a varying date which this year was 10 April - is that correct? The SA tax return asks for a figure which is "amount you were entitled to receive in the year" - again, not clear exactly what that means. If you can provide either a clear explanation of how the calculation should work (based on a a 24 Dec 2023 start) I'd be very grateful. Thanks

Hi,
To check on the state pension received for 2023/24 we would need to access your record.
You can contact HMRC to check the figure:
Self Assessment: general enquiries
Thank you.