# Appendix 3

## Processing rules for converting GPS date and time to real date and time.

Formula: =(A1/86400) +25569

The result will be in GMT (A1 is the cell with the GPS Time data from Rebel). 

For other time zones: = ((A1 +/- time zone adjustment) / 86400) + 25569.

For time zone adjustment value:

<https://www.epochconverter.com/timezones>

\= ((A1+19800)/86400) +25569 (For Indian Standard Time)

Then format the number to the Custom date and time format:

<div align="left"><figure><img src="/files/qTDeveTg70MehFqfEd5U" alt="" width="563"><figcaption></figcaption></figure></div>

So, it turns this number from the logger into this date and time:

<img src="/files/2YjmjGoAwO8F2TrgJtu6" alt="" data-size="original">


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