This graph looks pretty even, so I'm going to conclude the same thing everyone else does: babies don't care anything about what the moon's doing, they come when they're ready to be born.
// Start with the date you're learning about ($timestamp) $synmonth = 29.53059; // Days in a synodic lunar month $oneday = 24*60*60; // Seconds in a day $firstnew = mktime(12,0,0,1,26,1971); // We happen to know there was a new moon on 26 Jan 1971 $timestamp = $timestamp-$firstnew; // Difference between our timestamp and the new moon $daysoff = round(fmod($timestamp,$synmonth*$oneday)/$oneday,0);
| Days away from the new moon | # of babies spontaneously born |
|---|---|
| 1 | 425 |
| 2 | 459 |
| 3 | 422 |
| 4 | 474 |
| 5 | 402 |
| 6 | 438 |
| 7 | 405 |
| 8 | 482 |
| 9 | 423 |
| 10 | 450 |
| 11 | 381 |
| 12 | 427 |
| 13 | 443 |
| 14 | 404 |
| 15 | 403 |
| 16 | 422 |
| 17 | 397 |
| 18 | 351 |
| 19 | 429 |
| 20 | 456 |
| 21 | 407 |
| 22 | 442 |
| 23 | 401 |
| 24 | 438 |
| 25 | 414 |
| 26 | 409 |
| 27 | 445 |
| 28 | 429 |
| 29 | 410 |