https://www.zood.xyz/

An option is to use the E2E chat application Jami; there are mobile and desktop clients, and one feature is location sharing. You can enable it for ranges of time up to an hour, after which it disables itself again.

DeltaChat(and ArcaneChat client) have a location sharing feature.

May only have a timeframe of 5min-6hours though.

Looks like SMSLoc can remote query the location of a friend, using SMS as a transport.

I have not tried this one.

It appears you can whitelist certain phone numbers to query your location.

1. Note down your street's name
2. Look up the longitude and latitude of it on a map
3. Send those two numbers to your friend via SMS

There you go. You have to paid for your SMS though.

This is a community to discuss open source software, not a place to look for free service.