Scientist Rids The World...sleeve text trivia

[digitalJ]

I noticed the Greensleeves LP cover says
"Mixed at King Tubby's by Scientist at Midnight Friday 13th June 1981"

The Jah Guidance cover has the same "Mixed at King..." text.

However, the 13th of June fell on a Saturday in 1981 . Friday the 13th was in June 1980.
Could the LP have actually come out in 1980 instead of 1981
as documented on the Greenleeves and Jah Guidance covers (and here at RA)?

[kalcidis]

It's more probable they were trying to give it a more spooky edge saying that these supernatural set of tunes were mixed on Friday the 13th which in superstition is a day internationally known.

That's how I've always seen it.

[digitalJ]

It's more probable they were trying to give it a more spooky edge saying that these supernatural set of tunes were mixed on Friday the 13th which in superstition is a day internationally known.

That's how I've always seen it.

I understand that and have also always viewed it that way .It was just interesting to notice the 1981 - 1980 trivia...hence my "insinuation" about the work having been done in 1980 .

[Blazin Assassin]

Probably mixed on June 13th 1980, but released in 1981.