unfair expected delivery date calculation on ebay

[petermajk]

I sold a pair of shorts today , 20.04.17, my despatch time is 1 working day and I use Royal Mail 2nd class serice (2-3 working days delivery time). I have found out that expected delivery time for this item calculated by ebay is 23.04 17 (Sunday!) which is only one working day (Friday) from my sale date. 

It worries me as it may affect my  delivery / despatch time score on my account.

[paulodelluk]

Most people put 2 days now unless you sending tracked so you can upload the tracking number,

I have stopped selling outside the UK now, 9 weeks to Russia & 6 weeks to France !,