Read Date and Time out of any Node

Hi there, thanks for the response.
I hava a Rasperry
Nod Red V0.19.4
node.js V8.11.1
Linux 4.14.98

Google Translator...

Excuse me, but English is not my mother tongue.
I think it's better to explain my flow.
I want in the init.
Create a file that has the following structure:
Date, Time, S1, S2 ........ S15 = (header data)
Then I initialize an array with the delta values, which I later calculate with the read sensor data.

Now I read in the 15 sensor data and eagle this.

In the last section, I want to save all data in a CSV file so that it finally results in a table.
Date, Time, S1, S2 ........ S15
2019-11-10, 19:22:45 23.0, 22.3, 40.3
2019-11-10, 19:32:45 23.0, 22.3, 40.3

I can save the sensor data, but the date and the time I can not put in the column 1 and 2, but these come always after sensor 15.
I can not tell the join which input should be processed first.
Also, I can not determine when the Timestamp should be active.
Excuse me, but English is not my mother tongue.
I think it's better to explain my flow.
I want in the init.
Create a file that has the following structure:
Date, Time, S1, S2 ........ S15 = (header data)
Then I initialize an array with the delta values, which I later calculate with the read sensor data.

Now I read in the 15 sensor data and eagle this.

In the last section, I want to save all data in a CSV file so that it finally results in a table.
Date, Time, S1, S2 ........ S15
2019-11-10, 19:22:45 23.0, 22.3, 40.3
2019-11-10, 19:32:45 23.0, 22.3, 40.3

I can save the sensor data, but the date and the time I can not put in the column 1 and 2, but these come always after sensor 15.
I can not tell the join which input should be processed first.
Also, I can not determine when the Timestamp should be active.
But my program should go through from top to bottom and pass on the last sensor date and time.

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