Are more babies born during a full moon?

It was silly of me to make this graph because multiple large-scale studies have shown that there is no correlation between the phase of the moon and when babies decide to show up. But when you're a programmer with data and a word problem, sometimes bad things happen.

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.

Math check

I like showing my work, so here's php code to figure out what moon phase a recent date is in. This also inspired me to write my What moon phase were you born in quiz, there are more notes on moon phases and lunar months then.

// 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);

Data table

Days away from the new moon	# of babies spontaneously born
1	426
2	461
3	424
4	474
5	406
6	439
7	406
8	483
9	424
10	453
11	381
12	429
13	446
14	405
15	404
16	422
17	400
18	351
19	430
20	457
21	408
22	443
23	401
24	438
25	414
26	410
27	447
28	431
29	413