If I apply early for retirement extension currently expiring 15 July 2021 will the date be a year from application date or be 15 July 2022?

Finally got my remaining months stamped in today, on my yearly extension based on marriage. Buengkan immigration. Was supposed to get it last Friday, but because Kon Khaen office required new copies of my bankbook, last Wednesday (they called at told me they needed it same day, with no prior notice), Byengkan didn't have it ready friday, and said they would call me when I could come get it. Today I had to go for 90 days. They hadn't called yet. But they gave me the stamo today anyway.

Thing is they stamped the extension until 31st October 2021. Normally it expires 3rd October.

They said it's because of covid-19. Is this correct? I didn't think "normal" yearly extensions applied to any of that.

Also my father got his extension based on over 50 a few weeks ago, but only received 12 month. Expiry 4th November as always. Maybe that just falled outside the date range for covid-19 things?