Adding days to the Date portion of DateTime throws off the Time portion
So I'm having an issue in Apex with the Date's addDays function. It seems that adding more than a certain amount of days throws off the time by one hour. It all seems so arbitrary so I'm wondering if this is a known thing in Salesforce or not.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(4), aDate.time());
System.debug(adjustedDate);
Running that in an execute anonymous box outputs the following:
2019-03-05 17:44:28
2019-03-09 17:44:28
That's all good. The same date separated by four days and the same time. Just as you'd expect. But... adding five or more days causes behavior I can't wrap my head around.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(5), aDate.time());
System.debug(adjustedDate);
This outputs the following:
2019-03-05 17:46:08
2019-03-10 16:46:08
It falls back by an hour. Any idea why or is this a known thing? I'm in central timezone so my time is actually -6 hours from the printed time.
apex datetime bug
asked 10 hours ago
DylanDylan
132
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Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
So I'm having an issue in Apex with the Date's addDays function. It seems that adding more than a certain amount of days throws off the time by one hour. It all seems so arbitrary so I'm wondering if this is a known thing in Salesforce or not.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(4), aDate.time());
System.debug(adjustedDate);
Running that in an execute anonymous box outputs the following:
2019-03-05 17:44:28
2019-03-09 17:44:28
That's all good. The same date separated by four days and the same time. Just as you'd expect. But... adding five or more days causes behavior I can't wrap my head around.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(5), aDate.time());
System.debug(adjustedDate);
This outputs the following:
2019-03-05 17:46:08
2019-03-10 16:46:08
It falls back by an hour. Any idea why or is this a known thing? I'm in central timezone so my time is actually -6 hours from the printed time.
apex datetime bug
asked 10 hours ago
DylanDylan
132
New contributor
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
So I'm having an issue in Apex with the Date's addDays function. It seems that adding more than a certain amount of days throws off the time by one hour. It all seems so arbitrary so I'm wondering if this is a known thing in Salesforce or not.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(4), aDate.time());
System.debug(adjustedDate);
Running that in an execute anonymous box outputs the following:
2019-03-05 17:44:28
2019-03-09 17:44:28
That's all good. The same date separated by four days and the same time. Just as you'd expect. But... adding five or more days causes behavior I can't wrap my head around.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(5), aDate.time());
System.debug(adjustedDate);
This outputs the following:
2019-03-05 17:46:08
2019-03-10 16:46:08
It falls back by an hour. Any idea why or is this a known thing? I'm in central timezone so my time is actually -6 hours from the printed time.
apex datetime bug
asked 10 hours ago
DylanDylan
132
New contributor
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
So I'm having an issue in Apex with the Date's addDays function. It seems that adding more than a certain amount of days throws off the time by one hour. It all seems so arbitrary so I'm wondering if this is a known thing in Salesforce or not.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(4), aDate.time());
System.debug(adjustedDate);
Running that in an execute anonymous box outputs the following:
2019-03-05 17:44:28
2019-03-09 17:44:28
That's all good. The same date separated by four days and the same time. Just as you'd expect. But... adding five or more days causes behavior I can't wrap my head around.
DateTime aDate = System.now();
System.debug(aDate);
DateTime adjustedDate =
DateTime.newInstance(aDate.date().addDays(5), aDate.time());
System.debug(adjustedDate);
This outputs the following:
2019-03-05 17:46:08
2019-03-10 16:46:08
It falls back by an hour. Any idea why or is this a known thing? I'm in central timezone so my time is actually -6 hours from the printed time.
apex datetime bug
apex datetime bug
asked 10 hours ago
DylanDylan
132
New contributor
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 10 hours ago
DylanDylan
132
New contributor
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 10 hours ago
DylanDylan
132
New contributor
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 10 hours ago
DylanDylan
132
asked 10 hours ago
DylanDylan
132
132
New contributor
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Dylan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Daylight saving time 2019 in central timezone will begin at
2:00 AM on
Sunday, March 10
and ends at
2:00 AM on
Sunday, November 3
All times are in Central Time.
:)
answered 10 hours ago
Aayush KAayush K
1,11247
In other words, Daylight Saving Time begins in 5 days at this point in time. Which explains the discrepancy between adding 4 days and 5 days.
– Derek F
10 hours ago
Wow. I completely forgot about Daylight savings time. Thank you!
– Dylan
10 hours ago
+1. Great observation on Daylight changes.
– Jayant Das
8 hours ago
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Daylight saving time 2019 in central timezone will begin at
2:00 AM on
Sunday, March 10
and ends at
2:00 AM on
Sunday, November 3
All times are in Central Time.
:)
answered 10 hours ago
Aayush KAayush K
1,11247
In other words, Daylight Saving Time begins in 5 days at this point in time. Which explains the discrepancy between adding 4 days and 5 days.
– Derek F
10 hours ago
Wow. I completely forgot about Daylight savings time. Thank you!
– Dylan
10 hours ago
+1. Great observation on Daylight changes.
– Jayant Das
8 hours ago
add a comment |
Daylight saving time 2019 in central timezone will begin at
2:00 AM on
Sunday, March 10
and ends at
2:00 AM on
Sunday, November 3
All times are in Central Time.
:)
answered 10 hours ago
Aayush KAayush K
1,11247
In other words, Daylight Saving Time begins in 5 days at this point in time. Which explains the discrepancy between adding 4 days and 5 days.
– Derek F
10 hours ago
Wow. I completely forgot about Daylight savings time. Thank you!
– Dylan
10 hours ago
+1. Great observation on Daylight changes.
– Jayant Das
8 hours ago
add a comment |
Daylight saving time 2019 in central timezone will begin at
2:00 AM on
Sunday, March 10
and ends at
2:00 AM on
Sunday, November 3
All times are in Central Time.
:)
answered 10 hours ago
Aayush KAayush K
1,11247
Daylight saving time 2019 in central timezone will begin at
2:00 AM on
Sunday, March 10
and ends at
2:00 AM on
Sunday, November 3
All times are in Central Time.
:)
answered 10 hours ago
Aayush KAayush K
1,11247
answered 10 hours ago
Aayush KAayush K
1,11247
answered 10 hours ago
Aayush KAayush K
1,11247
answered 10 hours ago
Aayush KAayush K
1,11247
1,11247
In other words, Daylight Saving Time begins in 5 days at this point in time. Which explains the discrepancy between adding 4 days and 5 days.
– Derek F
10 hours ago
Wow. I completely forgot about Daylight savings time. Thank you!
– Dylan
10 hours ago
+1. Great observation on Daylight changes.
– Jayant Das
8 hours ago
add a comment |
In other words, Daylight Saving Time begins in 5 days at this point in time. Which explains the discrepancy between adding 4 days and 5 days.
– Derek F
10 hours ago
Wow. I completely forgot about Daylight savings time. Thank you!
– Dylan
10 hours ago
+1. Great observation on Daylight changes.
– Jayant Das
8 hours ago
In other words, Daylight Saving Time begins in 5 days at this point in time. Which explains the discrepancy between adding 4 days and 5 days.
– Derek F
10 hours ago
In other words, Daylight Saving Time begins in 5 days at this point in time. Which explains the discrepancy between adding 4 days and 5 days.
– Derek F
10 hours ago
Wow. I completely forgot about Daylight savings time. Thank you!
– Dylan
10 hours ago
Wow. I completely forgot about Daylight savings time. Thank you!
– Dylan
10 hours ago
+1. Great observation on Daylight changes.
– Jayant Das
8 hours ago
+1. Great observation on Daylight changes.
– Jayant Das
8 hours ago
add a comment |
Dylan is a new contributor. Be nice, and check out our Code of Conduct.
Dylan is a new contributor. Be nice, and check out our Code of Conduct.
Dylan is a new contributor. Be nice, and check out our Code of Conduct.
Dylan is a new contributor. Be nice, and check out our Code of Conduct.
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