I do all of my client invoicing inside Emacs, and one thing I keep track
of is an expected payment date, which is the invoice date plus
NET15/NET30/etc. terms (i.e., 15 business days after the invoice date).
Until now, it’s been a rough guess, but thanks to Emacs calc, it is
now more precise.
For calculating the current date + some number of business days:
M-x calc- Type
'to start an algebraic entry - Enter your starting date with angle brackets, e.g.,
<2016-11-01>. Hit return. - Enter the number of business days, e.g.,
15. Hit return.
- Type
t +(or useM-x calc-business-days-plus)
For more info, see the manual and Chris Wellons’ post about calc.