Convert Text to time

Hi

I have been trying to convert a text string into a timestamp and if the text string is more than say 1 hour old to perform an action (send me a WhatsApp).
I can extract the text string using {{ states(‘sensor.web_scrape_weewx’) }}

The text string is of the format 15/08/24 08:35:00

I have tried all sorts of combinations of as_timestamp, strftime() and strptime() all and search these forums all to no avail.
So for example {{as_timestamp(states(‘sensor.web_scrape_weewx’))}} in template gives

ValueError: Template error: as_timestamp got invalid input '15/08/24 08:35:00' when rendering template '{{as_timestamp(states('sensor.web_scrape_weewx'))}}' but no default was specified

Any help or pointers appreciated.

lcsneil

Maybe

{{ as_timestamp(strptime(states('sensor.web_scrape_weewx'), "%d/%m/%y %H:%M:%S")) }}

Thankyou so much!

Yes, that gives me unix time.

lcsneil