Starting Daylight Saving Time

Working with Dates and Times in Python

Max Shron

Data Scientist and Author

Working with Dates and Times in Python

Working with Dates and Times in Python

Start of Daylight Saving Time

spring_ahead_159am = datetime(2017, 3, 12, 1, 59, 59)
spring_ahead_159am.isoformat()
'2017-03-12T01:59:59'
spring_ahead_3am = datetime(2017, 3, 12, 3, 0, 0)
spring_ahead_3am.isoformat()
'2017-03-12T03:00:00'
(spring_ahead_3am - spring_ahead_159am).total_seconds()
3601.0
Working with Dates and Times in Python

Start of Daylight Saving Time

from datetime import timezone, timedelta

EST = timezone(timedelta(hours=-5))
EDT = timezone(timedelta(hours=-4))
Working with Dates and Times in Python

Start of Daylight Saving Time

spring_ahead_159am = spring_ahead_159am.replace(tzinfo = EST)
spring_ahead_159am.isoformat()
'2017-03-12T01:59:59-05:00'
spring_ahead_3am = spring_ahead_3am.replace(tzinfo = EDT)
spring_ahead_3am.isoformat()
'2017-03-12T03:00:00-04:00'
(spring_ahead_3am - spring_ahead_159am).seconds
1
Working with Dates and Times in Python

Start of Daylight Saving Time

Using dateutil

# Import tz
from dateutil import tz

# Create eastern timezone
eastern = tz.gettz('America/New_York')

# 2017-03-12 01:59:59 in Eastern Time (EST) spring_ahead_159am = datetime(2017, 3, 12, 1, 59, 59, tzinfo = eastern) # 2017-03-12 03:00:00 in Eastern Time (EDT) spring_ahead_3am = datetime(2017, 3, 12, 3, 0, 0, tzinfo = eastern)
Working with Dates and Times in Python

Daylight Saving

Working with Dates and Times in Python

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