adjusting for daylight savings time in M1 T6

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adjusting for daylight savings time in M1 T6 #483161 05/06/21 15:09 05/06/21 15:09
Joined: May 2018 Posts: 134 S SBGuy OP Member
SBGuy OP Member S Joined: May 2018 Posts: 134	I'm creating a 1-minute bar .t6 file from a US data source that only specifies the time in New York market hours: 9:30-16:00 ET. However .t6 files require timestamps to be in UTC zone. Is there anyway to check to see if the particular M1 bar is in daylight savings time, so I can +4 or +5 hours accordingly to get UTC time? checking (dst(ET,0)) doesn't work because the 2nd argument is a bar offset, and there are no bars yet in main(). If I do it in run(), the first asset does not evaluate dst() correctly, subsequent assets do evaluate dst() correctly. Strange. I looked at the sample CSVtoHistory.c sample script and it hardcodes any hour adjustment. Surely that's not a good solution if my historical data crossed DST periods. There used to be a HistoryZone system variable, but it appears to be removed in recent releases. Any ideas? Many thanks!

Re: adjusting for daylight savings time in M1 T6 [Re: SBGuy] #483162 05/06/21 15:31 05/06/21 15:31
Joined: Feb 2017 Posts: 1,731 Chicago AndrewAMD Serious User
AndrewAMD Serious User Joined: Feb 2017 Posts: 1,731 Chicago	Set the Now variable, and then use offset = NOW. https://zorro-project.com/manual/en/date.htm https://zorro-project.com/manual/en/month.htm www.vitaltrades.com - andrew@vitaltrades.com

Re: adjusting for daylight savings time in M1 T6 [Re: SBGuy] #483163 05/06/21 15:51 05/06/21 15:51
Joined: May 2018 Posts: 134 S SBGuy OP Member
SBGuy OP Member S Joined: May 2018 Posts: 134	Dude! You're awesome! That worked. But just to be safe I need to set Now back to the actual current UTC time right - like this? Code var adj = 5.0; Now = dataVar(34,i,0); if (dst(ET,NOW)) { adj = 4.0; printf("[%s] DST ACTIVE !!!\n",myAsset); } printf("adj = %.0f\n",adj); Now = wdate(NOW); for (i=records-1; i>=0; i--) { var mytime = dataVar(34,i,0) + adj/24.0; dataSet(34,i,0,mytime); }

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