UTC Time

$ git tag
v1.0.0

# create tag in local
$ git tag -a v1.0.1 -m "version updated to 1.0.1"
$ git tag
v1.0.0
v1.0.1

#push tag to the server
$ git push origin v1.0.1

#push all tags to the server
$ git push origin --tags

# delete tag v1.0.1 in local
$ git tag -d v1.0.1

# delete tag v1.0.1 in the server
$ git push origin :refs/tags/v1.0.1

$ git checkout v1.0.1