This is the year 588 BC according to the month lengths recorded on the tablet

Month 122 - 589 BC
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3rd Apr 588 4th Apr 588 5th Apr 588 6th Apr 588 7th Apr 588
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8th Apr 588 9th Apr 588 10th Apr 588 11th Apr 588 12th Apr 588
1112131415
13th Apr 588 14th Apr 588 15th Apr 588 16th Apr 588 17th Apr 588
1617181920
18th Apr 588 19th Apr 588 20th Apr 588 21st Apr 588 22nd Apr 588
2122232425
23rd Apr 588 24th Apr 588 25th Apr 588 26th Apr 588 27th Apr 588
26272829
28th Apr 588 29th Apr 588 30th Apr 588 1st May 588
Month 1 - 588 BC
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2nd May 588 3rd May 588 4th May 588 5th May 588 6th May 588
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7th May 588 8th May 588 9th May 588 10th May 588 11th May 588
1112131415
12th May 588 13th May 588 14th May 588 15th May 588 16th May 588
1617181920
17th May 588 18th May 588 19th May 588 20th May 588 21st May 588
2122232425
22nd May 588 23rd May 588 24th May 588 25th May 588 26th May 588
2627282930
27th May 588 28th May 588 29th May 588 30th May 588 31st May 588
Month 2 - 588 BC
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1st Jun 588 2nd Jun 588 3rd Jun 588 4th Jun 588 5th Jun 588
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6th Jun 588 7th Jun 588 8th Jun 588 9th Jun 588 10th Jun 588
1112131415
11th Jun 588 12th Jun 588 13th Jun 588 14th Jun 588 15th Jun 588
1617181920
16th Jun 588 17th Jun 588 18th Jun 588 19th Jun 588 20th Jun 588
2122232425
21st Jun 588 22nd Jun 588 23rd Jun 588 24th Jun 588 25th Jun 588
26272829
26th Jun 588 27th Jun 588 28th Jun 588 29th Jun 588
Month 3 - 588 BC
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30th Jun 588 1st Jul 588 2nd Jul 588 3rd Jul 588 4th Jul 588
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5th Jul 588 6th Jul 588 7th Jul 588 8th Jul 588 9th Jul 588
1112131415
10th Jul 588 11th Jul 588 12th Jul 588 13th Jul 588 14th Jul 588
1617181920
15th Jul 588 16th Jul 588 17th Jul 588 18th Jul 588 19th Jul 588
2122232425
20th Jul 588 21st Jul 588 22nd Jul 588 23rd Jul 588 24th Jul 588
2627282930
25th Jul 588 26th Jul 588 27th Jul 588 28th Jul 588 29th Jul 588
Month 4 - 588 BC
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30th Jul 588 31st Jul 588 1st Aug 588 2nd Aug 588 3rd Aug 588
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4th Aug 588 5th Aug 588 6th Aug 588 7th Aug 588 8th Aug 588
1112131415
9th Aug 588 10th Aug 588 11th Aug 588 12th Aug 588 13th Aug 588
1617181920
14th Aug 588 15th Aug 588 16th Aug 588 17th Aug 588 18th Aug 588
2122232425
19th Aug 588 20th Aug 588 21st Aug 588 22nd Aug 588 23rd Aug 588
2627282930
24th Aug 588 25th Aug 588 26th Aug 588 27th Aug 588 28th Aug 588
Month 5 - 588 BC
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29th Aug 588 30th Aug 588 31st Aug 588 1st Sep 588 2nd Sep 588
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3rd Sep 588 4th Sep 588 5th Sep 588 6th Sep 588 7th Sep 588
1112131415
8th Sep 588 9th Sep 588 10th Sep 588 11th Sep 588 12th Sep 588
1617181920
13th Sep 588 14th Sep 588 15th Sep 588 16th Sep 588 17th Sep 588
2122232425
18th Sep 588 19th Sep 588 20th Sep 588 21st Sep 588 22nd Sep 588
2627282930
23rd Sep 588 24th Sep 588 25th Sep 588 26th Sep 588 27th Sep 588
Month 6 - 588 BC
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28th Sep 588 29th Sep 588 30th Sep 588 1st Oct 588 2nd Oct 588
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3rd Oct 588 4th Oct 588 5th Oct 588 6th Oct 588 7th Oct 588
1112131415
8th Oct 588 9th Oct 588 10th Oct 588 11th Oct 588 12th Oct 588
1617181920
13th Oct 588 14th Oct 588 15th Oct 588 16th Oct 588 17th Oct 588
2122232425
18th Oct 588 19th Oct 588 20th Oct 588 21st Oct 588 22nd Oct 588
26272829
23rd Oct 588 24th Oct 588 25th Oct 588 26th Oct 588
Month 7 - 588 BC
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27th Oct 588 28th Oct 588 29th Oct 588 30th Oct 588 31st Oct 588
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1st Nov 588 2nd Nov 588 3rd Nov 588 4th Nov 588 5th Nov 588
1112131415
6th Nov 588 7th Nov 588 8th Nov 588 9th Nov 588 10th Nov 588
1617181920
11th Nov 588 12th Nov 588 13th Nov 588 14th Nov 588 15th Nov 588
2122232425
16th Nov 588 17th Nov 588 18th Nov 588 19th Nov 588 20th Nov 588
2627282930
21st Nov 588 22nd Nov 588 23rd Nov 588 24th Nov 588 25th Nov 588
Month 8 - 588 BC
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26th Nov 588 27th Nov 588 28th Nov 588 29th Nov 588 30th Nov 588
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1st Dec 588 2nd Dec 588 3rd Dec 588 4th Dec 588 5th Dec 588
1112131415
6th Dec 588 7th Dec 588 8th Dec 588 9th Dec 588 10th Dec 588
1617181920
11th Dec 588 12th Dec 588 13th Dec 588 14th Dec 588 15th Dec 588
2122232425
16th Dec 588 17th Dec 588 18th Dec 588 19th Dec 588 20th Dec 588
2627282930
21st Dec 588 22nd Dec 588 23rd Dec 588 24th Dec 588 25th Dec 588
Month 9 - 588 BC
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26th Dec 588 27th Dec 588 28th Dec 588 29th Dec 588 30th Dec 588
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31st Dec 588 1st Jan 587 2nd Jan 587 3rd Jan 587 4th Jan 587
1112131415
5th Jan 587 6th Jan 587 7th Jan 587 8th Jan 587 9th Jan 587
1617181920
10th Jan 587 11th Jan 587 12th Jan 587 13th Jan 587 14th Jan 587
2122232425
15th Jan 587 16th Jan 587 17th Jan 587 18th Jan 587 19th Jan 587
26272829
20th Jan 587 21st Jan 587 22nd Jan 587 23rd Jan 587
Month 10 - 588 BC
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24th Jan 587 25th Jan 587 26th Jan 587 27th Jan 587 28th Jan 587
678910
29th Jan 587 30th Jan 587 31st Jan 587 1st Feb 587 2nd Feb 587
1112131415
3rd Feb 587 4th Feb 587 5th Feb 587 6th Feb 587 7th Feb 587
1617181920
8th Feb 587 9th Feb 587 10th Feb 587 11th Feb 587 12th Feb 587
2122232425
13th Feb 587 14th Feb 587 15th Feb 587 16th Feb 587 17th Feb 587
26272829
18th Feb 587 19th Feb 587 20th Feb 587 21st Feb 587
Month 11 - 588 BC
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22nd Feb 587 23rd Feb 587 24th Feb 587 25th Feb 587 26th Feb 587
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27th Feb 587 28th Feb 587 1st Mar 587 2nd Mar 587 3rd Mar 587
1112131415
4th Mar 587 5th Mar 587 6th Mar 587 7th Mar 587 8th Mar 587
1617181920
9th Mar 587 10th Mar 587 11th Mar 587 12th Mar 587 13th Mar 587
2122232425
14th Mar 587 15th Mar 587 16th Mar 587 17th Mar 587 18th Mar 587
2627282930
19th Mar 587 20th Mar 587 21st Mar 587 22nd Mar 587 23rd Mar 587
Month 12 - 588 BC
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24th Mar 587 25th Mar 587 26th Mar 587 27th Mar 587 28th Mar 587
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29th Mar 587 30th Mar 587 31st Mar 587 1st Apr 587 2nd Apr 587
1112131415
3rd Apr 587 4th Apr 587 5th Apr 587 6th Apr 587 7th Apr 587
1617181920
8th Apr 587 9th Apr 587 10th Apr 587 11th Apr 587 12th Apr 587
2122232425
13th Apr 587 14th Apr 587 15th Apr 587 16th Apr 587 17th Apr 587
26272829
18th Apr 587 19th Apr 587 20th Apr 587 21st Apr 587