Can I obtain the date and time stamp at different points in Smarty?
Yes, you can. Please see the examples below for the exact format.
7 days ago
{"-7 day"|strtotime|date_format:"%Y/%m/%d"}
1 year ago
{"-1 year"|strtotime|date_format:"%Y/%m/%d"}
30 days later
{"30 day"|strtotime|date_format:"%Y/%m/%d"}
Today
{$smarty.now|date_format:"%Y/%m/%d"}
Datetime is displayed using the PHP strtotime function. Please refer to the link for more details.