Functions to format the distance between a given date and now

[Seddryck]

• The function format-elapsed-time is returning the textual representation of the distance between the given date and now. If the given date is in the future, returns null.

Distance between dates	Result
0 ... 30 secs	less than a minute
30 secs ... 1 min 30 secs	1 minute
1 min 30 secs ... 44 mins 30 secs	[2..44] minutes
44 mins ... 30 secs ... 89 mins 30 secs	about 1 hour
89 mins 30 secs ... 23 hrs 59 mins 30 secs	about [2..24] hours
23 hrs 59 mins 30 secs ... 41 hrs 59 mins 30 secs	1 day
41 hrs 59 mins 30 secs ... 29 days 23 hrs 59 mins 30 secs	[2..30] days
29 days 23 hrs 59 mins 30 secs ... 44 days 23 hrs 59 mins 30 secs	about 1 month
44 days 23 hrs 59 mins 30 secs ... 59 days 23 hrs 59 mins 30 secs	about 2 months
59 days 23 hrs 59 mins 30 secs ... 1 yr	[2..12] months
1 yr ... 1 yr 3 months	about 1 year
1 yr 3 months ... 1 yr 9 month s	over 1 year
1 yr 9 months ... 2 yrs	almost 2 years
N yrs ... N yrs 3 months	about N years
N yrs 3 months ... N yrs 9 months	over N years
N yrs 9 months ... N+1 yrs	almost N+1 years

• The function format-elapsed-seconds is returning the textual representation of the distance between the given date and now. If the given date is in the future, returns null.

Distance between dates	Result
0 secs ... 5 secs	less than 5 seconds
5 secs ... 10 secs	less than 10 seconds
10 secs ... 20 secs	less than 20 seconds
20 secs ... 40 secs	half a minute
40 secs ... 60 secs	less than a minute
60 secs ... 90 secs	1 minute
90 secs ...	more than a minute