How to Use secondsFromTime() and secondsTillTime() Functions

[CHOZEN]

I want to utilize SecondsFromTime and SecondsTillTime in thinkscript to write a code to place in my scanner that will only scan premarket from 4am - 9:30 am.

Found this example:

# The following statement will be true any time AFTER 9:30 am
def Aftr930 = secondsFromTime(930) > 0;

 

[BenTen]

By only scanning during pre-market. You can also use the “within X bars” as a lookback period.

 

[korygill]

Search code here that uses SecondsFromTime and SecondsTillTime. You may need to adjust for your timezone.

I use a variable in all my scripts like

input timeOffsetFromEST = -300; #hint timeOffsetFromEST: 24-hour time offset from EST (-300 for PST)

and then

startTime = 0630 - timeOffsetFromEST;
endOfTradingTime = 1315 - timeOffsetFromEST;

and then maybe something like

def isActive = if SecondsTillTime(endTime) > 0 and SecondsFromTime(startTime) >= 0
                         then 1
                         else 0;

def atEndTime = if secondsTillTime(endTime) == 0
                then 1
                else 0;

 

[Deleted2090]

@korygill

Let me explain a bit better

The following code finds the % change in the value of a stock from open of the same day with aggregation period set to DAY in my scanner. I have some other filters in the scan like average_vol and sizzle index.

def x = round(100*((close/open)-1),2);
plot y = if x >= 4 then 1 else if x <= -4 then 1 else 0;

What I was trying to do is, based on time after market opens, the % which is >=4 or <= -4 should change.

From
9:30 to 10:30 it should be 2.5%
10:30 to 13:30 it should be 3.5%
13:30 to 16:00 it should be 4.5%

 

[korygill]

My guess is that with daily aggregation, you never get time in 30 min increments to evaluate. Hence the constant return.