Barbarian, you present a fine case of scholarship, which bears down to no evidence, only translations of Hebrew into English. I will check out the links as well , later.
First of all, if we are going to study Hebrew words, we study all the verses that use the word, which you have presented well. So Let's go through your examples one by one :-
(1) 1Sa 27:7 And the time that David dwelt in the country of the Philistines was a full year and four months. KJV
1Sa 27:7 And the time that David dwelt in the country of the Philistines was a day and four months.
eg: Nu 10:10 Also in the day of your gladness, and in your solemn days, and in the beginnings of your months,
Possibly referring to four months and a day ? not sure??
(2) Ex 13:10 Thou shalt therefore keep this ordinance in his season from year to year. KJV
Ex 13:10 Thou shalt therefore keep this ordinance in the "appointed times" from day to day.
Ge 1:14 ¶ And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for "appointed times", and for days, and years "shaneh"
Ho 12:9 And I that am the LORD thy God from the land of Egypt will yet make thee to dwell in tabernacles, as in the days of the "appointed times".
The use of the translation "year" is confusing. Hebrew already has a word for "year" but did not use it. Appointed times came with a "year" on certain "days" hence keeping the "appointed times" on the correct day to the final day, makes more sense.
(3)Ge 43:9 I will be surety for him; of my hand shalt thou require him: if I bring him not unto thee, and set him before thee, then let me bear the blame for ever: KJV
Ge 43:9 I will be surety for him; of my hand shalt thou require him: if I bring him not unto thee, and set him before thee, then let me bear the blame daily:
ie the Father was to suffer daily should his son not come back to him....
(4) Ge 44:32 For thy servant became surety for the lad unto my father, saying, If I bring him not unto thee, then I shall bear the blame to my father for ever.
Ge 44:32 For thy servant became surety for the lad unto my father, saying, If I bring him not unto thee, then I shall bear the blame to my father daily.
Ge 44:32 (YLT) for thy servant obtained the youth by surety from my father, saying, If I bring him not in unto thee--then I have sinned against my father all the days.
.ie the Father was to suffer daily should his son not come back to him....
(5) De 4:40 Thou shalt keep therefore his statutes, and his commandments, which I command thee this day, that it may go well with thee, and with thy children after thee, and that thou mayest prolong thy days upon the earth, which the LORD thy God giveth thee, for ever. KJV
De 4:40 Thou shalt keep therefore his statutes, and his commandments, which I command thee this day, that it may go well with thee, and with thy children after thee, and that thou mayest prolong thy days upon the earth, which the LORD thy God giveth thee, daily.
De 4:40 (YLT) and thou hast kept His statutes and His commands which I am commanding thee to-day, so that it is well to thee, and to thy sons after thee, and so that thou prolongest days on the ground which Jehovah thy God is giving to thee--all the days.'
The Young's literal translation is a better method to read Hebrew words properly....understanding the context is another matter.
1Co 15:31 I protest by your rejoicing which I have in Christ Jesus our Lord, I die daily "hemera".
The NT also lists "day" on the end of sentences, as this example with "hemera".
(6) De 10:10 And I stayed in the mount, according to the first time, forty days and forty nights;KJV
De 10:10 (YLT) `And I--I have stood in the mount, as the former days, forty days and forty nights,
The Young's literal translation is a better method to read Hebrew words properly....understanding the context is another matter.
(7) De 18:5 For the LORD thy God hath chosen him out of all thy tribes, to stand to minister in the name of the LORD, him and his sons for ever.
De 18:5 (YLT) for on him hath Jehovah thy God fixed, out of all thy tribes, to stand to serve in the name of Jehovah, He and his sons continually.
De 18:5 for on him hath Jehovah thy God fixed, out of all thy tribes, to stand to serve in the name of Jehovah, He and his sons for all the days.
This is perhaps the only example of days having a continued sense....not that day means more than 24 hours, but the days is ongoing, day after day after day....
(8) De 19:9 If thou shalt keep all these commandments to do them, which I command thee this day, to love the LORD thy God, and to walk ever in his ways;
De 19:9 If thou shalt keep all these commandments to do them, which I command thee this day, to love the LORD thy God, and to walk daily in his ways;
De 19:9 (YLT) when thou keepest all this command to do it, which I am commanding thee to-day, to love Jehovah thy God, and to walk in His ways all the days--then thou hast added to thee yet three cities to these three;
The Young's literal translation is a better method to read Hebrew words properly....understanding the context is another matter.
Barbarian I do not see any change to the meaning of yom, as "day". Some contexts suggest I might do something day after day after day. But the "day" remains a 12 hour of light and 12 hour of night.
Joh 11:9 Jesus answered, Are there not twelve hours in the day?
Do you have any other Bible verses of context ?
Shalom