@al3xandru here you go:
* bim definition: tantek.com/2015/228/t3/bim-definition
bim definition
noun; plural: bims
1. each of six newcal periods into which a year is divided.
2. 61 days, except for the last 60 days of a non-leap-year.
Etymology: short for bi-month or bimonth, from bi- ("two") + month.
See also: newcal.org/#bimdefinition
@al3xandru just realized after Yahoo/Google/Binging for ‘bim’ that I should post a more search-findable definition.
@al3xandru 1 .txt file per bim,
\n\nYYYY-DDD mm/dd\n day header,
optional \nHH:MM timestamp on entries between them.