How to change format time to GPS week, GPS seconds?

Hi all,

How can I change:

GPS dates (NO LEAP SECONDS ACCOUNTED)

April 30th, 2018, 03:46:40 => GPS week 1999, GPS seconds 100000

April 30th, 2018, 17:40:00 => GPS week 1999, GPS seconds 150000

Answer 1

[Rik]

The start date of this GPS epoch is probably on Wikipedia. You can simply subtract that date from your date.

Then you calculate the number of seconds of that difference. Use mod to find the remainder after division by 7*24*60*60 and use floor to find the number of weeks elapsed.

[galaxy]

Thank you so much