Every block mined on February 29th was full

I'm doing some research on a different matter, but I couldn't help but notice that every block mined on February 29th was full.Here are the numbers:Height - Time - Size (bytes) 400468 - 2016-02-29 00:01:18 - 749088 400469 - 2016-02-29 00:46:30 - 999798 400470 - 2016-02-29 01:08:30 - 999861 400471 - 2016-02-29 01:12:21 - 998198 400472 - 2016-02-29 01:18:09 - 999968 400473 - 2016-02-29 01:19:40 - 949223 400474 - 2016-02-29 01:20:45 - 989140 400475 - 2016-02-29 01:26:32 - 999819 400476 - 2016-02-29 01:50:10 - 749112 400477 - 2016-02-29 01:54:30 - 749045 400478 - 2016-02-29 02:02:18 - 949041 400479 - 2016-02-29 02:27:02 - 999966 400480 - 2016-02-29 02:29:13 - 998195 400481 - 2016-02-29 02:30:39 - 934190 400482 - 2016-02-29 02:42:51 - 979010 400483 - 2016-02-29 02:46:44 - 999954 400484 - 2016-02-29 02:51:26 - 999668 400485 - 2016-02-29 02:57:00 - 999978 400486 - 2016-02-29 03:12:24 - 934233 400487 - 2016-02-29 03:19:12 - 998229 400488 - 2016-02-29 03:34:22 - 999852 400489 - 2016-02-29 03:38:48 - 934383 400490 - 2016-02-29 03:42:35 - 999883 400491 - 2016-02-29 03:45:35 - 997880 400492 - 2016-02-29 04:01:41 - 988103 400493 - 2016-02-29 04:11:10 - 999985 400494 - 2016-02-29 04:25:40 - 979115 400495 - 2016-02-29 04:38:29 - 997863 400496 - 2016-02-29 04:39:06 - 209 400497 - 2016-02-29 04:42:50 - 999845 400498 - 2016-02-29 04:44:13 - 998192 400499 - 2016-02-29 04:51:56 - 998062 400500 - 2016-02-29 04:54:06 - 999886 400501 - 2016-02-29 04:55:02 - 999934 400502 - 2016-02-29 04:55:56 - 999955 400503 - 2016-02-29 05:26:57 - 998190 400504 - 2016-02-29 05:29:44 - 998192 400505 - 2016-02-29 05:30:43 - 998072 400506 - 2016-02-29 06:01:28 - 979178 400507 - 2016-02-29 06:08:39 - 999956 400508 - 2016-02-29 06:13:00 - 979107 400509 - 2016-02-29 06:15:31 - 930080 400510 - 2016-02-29 06:20:05 - 998194 400511 - 2016-02-29 06:22:20 - 998121 400512 - 2016-02-29 06:25:10 - 932990 400513 - 2016-02-29 06:36:27 - 999653 400514 - 2016-02-29 06:41:31 - 933873 400515 - 2016-02-29 06:43:34 - 979059 400516 - 2016-02-29 06:44:54 - 987719 400517 - 2016-02-29 06:50:26 - 934512 400518 - 2016-02-29 07:00:03 - 934498 400519 - 2016-02-29 07:14:11 - 979170 400520 - 2016-02-29 07:29:07 - 999991 400521 - 2016-02-29 07:44:10 - 999834 400522 - 2016-02-29 07:47:22 - 981632 400523 - 2016-02-29 08:27:53 - 999998 400524 - 2016-02-29 08:29:57 - 979107 400525 - 2016-02-29 08:34:08 - 999843 400526 - 2016-02-29 08:41:05 - 999808 400527 - 2016-02-29 08:48:07 - 979125 400528 - 2016-02-29 09:05:44 - 999916 400529 - 2016-02-29 09:06:52 - 419 400530 - 2016-02-29 09:12:04 - 934512 400531 - 2016-02-29 09:13:59 - 209 400532 - 2016-02-29 09:45:01 - 998129 400533 - 2016-02-29 09:59:32 - 999965 400534 - 2016-02-29 10:17:37 - 999889 400535 - 2016-02-29 10:29:26 - 999928 400536 - 2016-02-29 10:35:16 - 988047 400537 - 2016-02-29 10:49:34 - 998202 400538 - 2016-02-29 10:52:38 - 749045 400539 - 2016-02-29 10:55:35 - 998102 400540 - 2016-02-29 11:27:11 - 749156 400541 - 2016-02-29 11:31:21 - 998067 400542 - 2016-02-29 12:01:57 - 934477 400543 - 2016-02-29 12:03:59 - 998116 400544 - 2016-02-29 12:18:09 - 998178 400545 - 2016-02-29 12:21:24 - 999913 400546 - 2016-02-29 12:26:41 - 999776 400547 - 2016-02-29 12:26:54 - 209 400548 - 2016-02-29 12:30:19 - 999978 400549 - 2016-02-29 12:33:27 - 999730 400550 - 2016-02-29 12:33:58 - 989157 400551 - 2016-02-29 12:36:13 - 208 400552 - 2016-02-29 13:03:40 - 999787 400553 - 2016-02-29 13:32:06 - 749114 400554 - 2016-02-29 13:43:58 - 998059 400555 - 2016-02-29 14:21:19 - 998234 400556 - 2016-02-29 14:44:46 - 999902 400557 - 2016-02-29 14:52:36 - 999907 400558 - 2016-02-29 14:57:40 - 999999 400559 - 2016-02-29 15:23:32 - 998063 400560 - 2016-02-29 15:50:00 - 998170 400561 - 2016-02-29 16:00:43 - 934033 400562 - 2016-02-29 16:07:19 - 999979 400563 - 2016-02-29 16:10:37 - 989173 400564 - 2016-02-29 16:11:35 - 997999 400565 - 2016-02-29 16:14:19 - 999712 400566 - 2016-02-29 16:27:18 - 999767 400567 - 2016-02-29 16:43:21 - 934575 400568 - 2016-02-29 16:50:17 - 949216 400569 - 2016-02-29 17:01:04 - 934573 400570 - 2016-02-29 17:18:13 - 934249 400571 - 2016-02-29 17:33:48 - 989181 400572 - 2016-02-29 17:36:36 - 999854 400573 - 2016-02-29 17:36:47 - 1095 400574 - 2016-02-29 17:55:48 - 998225 400575 - 2016-02-29 18:03:56 - 999987 400576 - 2016-02-29 18:19:03 - 999875 400577 - 2016-02-29 18:21:15 - 997981 400578 - 2016-02-29 18:23:38 - 999748 400579 - 2016-02-29 18:57:28 - 998154 400580 - 2016-02-29 19:03:40 - 999854 400581 - 2016-02-29 19:04:21 - 209 400582 - 2016-02-29 19:18:51 - 997852 400583 - 2016-02-29 19:19:12 - 4654 400584 - 2016-02-29 19:49:24 - 949214 400585 - 2016-02-29 20:12:51 - 949003 400586 - 2016-02-29 20:32:26 - 999862 400587 - 2016-02-29 20:49:56 - 934495 400588 - 2016-02-29 20:54:10 - 998079 400589 - 2016-02-29 21:09:39 - 999990 400590 - 2016-02-29 21:13:13 - 931340 400591 - 2016-02-29 21:23:21 - 989141 400592 - 2016-02-29 21:26:14 - 989115 400593 - 2016-02-29 21:28:41 - 998175 400594 - 2016-02-29 22:26:00 - 998116 400595 - 2016-02-29 22:46:14 - 934373 400596 - 2016-02-29 22:56:24 - 749108 400597 - 2016-02-29 22:58:39 - 998131 400598 - 2016-02-29 23:20:44 - 949222 400599 - 2016-02-29 23:23:16 - 998216 400600 - 2016-02-29 23:25:44 - 999942 750k, 935k and 950k are common soft limits. Blocks under 10k bytes are so-called "empty blocks" from SPV mining.No conclusions, just facts. via /r/Bitcoin http://bit.ly/1VNVYGf