What does "The by-gone-day proclaym'd" mean in scene ii, act I of The Winter's Tale?

Question

In the second scene of The Winter's Tale, Hermione says:

I had thought (Sir) to haue held my peace, vntill
You had drawne Oathes from him, not to stay: you (Sir)
Charge him too coldly. Tell him, you are sure
All in Bohemia's well: this satisfaction,
The by-gone-day proclaym'd, say this to him,
He's beat from his best ward.

I tried to decode this sentence but to no avail. I looked up proclaim in Wiktionary, but methinks the verb does not mean declare here. What does The by-gone-day proclaym'd mean in Hermione's speech?

Answer 1

Proclaym’d here means revealed or demonstrated. To paraphrase:

Tell him you are sure all’s well in Bohemia — as demonstrated by the bygone day.

proclaim, v.
I. 4. a. transitive. figurative. Of a thing: to make known or manifest; to be evidence or an indication of, demonstrate; to reveal as; to show or prove to be.
_{[selected usage examples]
1603    W. SHAKESPEARE Hamlet i. iii. 72    The apparell oft proclaimes the man.
c1704    M. PRIOR Henry & Emma 242    His steps proclaim no lover's haste.
1757    T. GRAY Ode II iii. ii, in Odes 19    Her eye proclaims her of the Briton-Line.
1813    W. SCOTT Rokeby i. 11    Then did his silence long proclaim A struggle between fear and shame.}

_{Source: Oxford English Dictionary (login required)}

 

Answer 2

'Proclaim' is used here in the sense of

to announce or declare in an official or formal manner

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On Litcharts, "this satisfaction the by-gone-day proclaym'd" is transcribed as

we heard good news yesterday

"This satisfaction" refers to the certainty that all in Bohemia is well, and apparently it was yesterday ('bygone' day as 'former' day), that this news was brought to Hermione's attention—or, at least, she wants Leontes to use this to entreat Polixenes to stay.