Library for calendar events recurring by 2 or 4 week period
Jan. 1, 2017 was Sunday, which is a good starting point to create a calendar system runs by week.
| Decimal | Binary | |
|---|---|---|
| 5 | 0101 | Each odd week starts from the epoch |
| 10 | 1010 | Each even week starts from the epoch |
| 1 | 0001 | 1st, 5th, 9th week and so on |
| 2 | 0010 | 2nd, 6th, 10th week and so on |
| 4 | 0100 | 3rd, 7th, 11th week and so on |
| 8 | 1000 | 4th, 8th, 12th week and so on |
> const cal = require('weekrun-calendar')
undefined
> cal.nextRecurringDate(new Date(2017, 0, 1), 'sun', 5).toDateString()
'Sun Jan 01 2017'
> cal.nextRecurringDate(new Date(2017, 0, 2), 'sun', 5).toDateString()
'Sun Jan 15 2017'
> cal.nextRecurringDate(new Date(2017, 0, 1), 'sun', 10).toDateString()
'Sun Jan 08 2017'