class datetime.tzinfo This is an abstract base class, meaning that this class should not be instantiated directly. You need to derive a concrete subclass, and (at least) supply implementations of the standard tzinfo methods needed by the datetime methods you use. The datetime module supplies a simple concrete subclass of tzinfo, timezone, which can represent timezones with fixed offset from UTC such as UTC itself or North American EST and EDT. An instance of (a concrete subclass of) tzinfo c

class datetime.timezone(offset[, name]) The offset argument must be specified as a timedelta object representing the difference between the local time and UTC. It must be strictly between -timedelta(hours=24) and timedelta(hours=24) and represent a whole number of minutes, otherwise ValueError is raised. The name argument is optional. If specified it must be a string that is used as the value returned by the tzname(dt) method. Otherwise, tzname(dt) returns a string ‘UTCsHH:MM’, where s is th

timezone.fromutc(dt) Return dt + offset. The dt argument must be an aware datetime instance, with tzinfo set to self.

timezone.dst(dt) Always returns None.

timezone.tzname(dt) Return the fixed value specified when the timezone instance is constructed or a string ‘UTCsHH:MM’, where s is the sign of offset, HH and MM are two digits of offset.hours and offset.minutes respectively.

timedelta.max The most positive timedelta object, timedelta(days=999999999, hours=23, minutes=59, seconds=59, microseconds=999999).

timedelta.resolution The smallest possible difference between non-equal timedelta objects, timedelta(microseconds=1).

timedelta.total_seconds() Return the total number of seconds contained in the duration. Equivalent to td / timedelta(seconds=1). Note that for very large time intervals (greater than 270 years on most platforms) this method will lose microsecond accuracy. New in version 3.2.

timedelta.min The most negative timedelta object, timedelta(-999999999).

class datetime.timedelta(days=0, seconds=0, microseconds=0, milliseconds=0, minutes=0, hours=0, weeks=0) All arguments are optional and default to 0. Arguments may be integers or floats, and may be positive or negative. Only days, seconds and microseconds are stored internally. Arguments are converted to those units: A millisecond is converted to 1000 microseconds. A minute is converted to 60 seconds. An hour is converted to 3600 seconds. A week is converted to 7 days. and days, seconds an