Summoner Engagement and Advancement

Polygon

To be eligible for the Alliance Event Summoner Engagement and Advancement rewards, Whats the minimum number of days you have to be in an alliance?

SummonerNR

Summoner Advancement, says 1 Day Blackout period.
Assume it's the same for Engagement,

https://help.kabamsupport.com/hc/en-us/articles/360052574411-Alliance-Blackout-Period-Events