Find the epoch of the most recent midnight

Question

I'm trying to find the epoch seconds for the most recent midnight in Python.

which has

from datetime import datetime, date, time
midnight = datetime.combine(date.today(), time.min)

'midnight' is now the right time...but how do I get it into epoch seconds? i.e., something like 1393997154 (or 1393997154.09)

Not saying the above the best approach. In perl, I would

my ($sec,$min,$hour,$mday,$mon,$year) = localtime(time);
$year += 1900;
return timelocal(0,0,0,$mday,$mon,$year);

...in other words, get the struct, change hour/min/sec, then convert it.

possible duplicate of [Convert python datetime to epoch with strftime](http://stackoverflow.com/questions/11743019/convert-python-datetime-to-epoch-with-strftime) — Andy, Mar 05 '14 at 05:38

score 4 · Answer 1 · answered Mar 05 '14 at 05:37

4

You can use the strftime function with %s:

>>> import datetime
>>> datetime.date.today().strftime('%s')
'1393920000'

answered Mar 05 '14 at 05:37

jterrace

Interestingly, %s is not documented on the 2.7 datetime page, though it works. Apparently it only does GM time, though, not localtime. – raindog308 Mar 06 '14 at 22:03
%s is not portable. It only works on systems where C library supports the strftime() library function (glibc). – Noah Spurrier Nov 18 '14 at 20:05
1

Isn't Python always linked with glibc? – jterrace Nov 18 '14 at 20:59

score 3 · Accepted Answer · answered Mar 05 '14 at 05:45

To convert normal time format (yyyy-mm-dd hours:minutes:seconds) into epoch seconds, follow the code.

import datetime
import calendar
d = datetime.datetime(yyyy,mm,dd,hours,minutes,seconds)
calendar.timegm(d.timetuple())

EX: To calculate epoch time for 2014-03-04 12:00:00,

>>> import datetime
>>> import calendar
>>> d = datetime.datetime(2014,03,04,12,00,00)
>>> calendar.timegm(d.timetuple())
1393934400

score 0 · Answer 3 · answered Jun 08 '18 at 14:28

0

If your epoch reference is time.time(), you can use :

now=list(time.localtime())
LocalMidnight=time.mktime(tuple(now[:3]+[0]*3+now[-3:]))

answered Jun 08 '18 at 14:28

doom

3 Answers3