From a71562ab818fad9d449e908cd2a8ff8b8bc73327 Mon Sep 17 00:00:00 2001
From: Emillio Mariscal <emi420@gmail.com>
Date: Wed, 5 Jul 2023 22:39:09 -0300
Subject: [PATCH] Update doc

---
 README.md | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index c7b90e25..9b33c9f3 100644
--- a/README.md
+++ b/README.md
@@ -32,9 +32,13 @@ Select the region you want to work with and bootstrap the database with data.
 
 ### 3. Run
 
-For keeping the database up-to-date, you must run underpass.
+For keeping the database up-to-date, you must run underpass:
 
-`./underpass -t last`
+`./underpass -t $(date +%Y-%m-%dT%H:%M:%S -d "2 days ago")'`
+
+On MacOS, the date command works different:
+
+`./underpass -t $(date -v -2d +%Y-%m-%dT%H:%M:%S)`
 
 A a process will start downloading and processing OSM data until lastest data
 is reached, and then it will continue updating data every minute.